{"id":894,"date":"2026-03-23T22:09:15","date_gmt":"2026-03-23T22:09:15","guid":{"rendered":"https:\/\/www.visualize-ai.com\/vi\/common-pitfalls-in-ux-checklist-mistakes-to-avoid\/"},"modified":"2026-03-23T22:09:15","modified_gmt":"2026-03-23T22:09:15","slug":"common-pitfalls-in-ux-checklist-mistakes-to-avoid","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/vi\/common-pitfalls-in-ux-checklist-mistakes-to-avoid\/","title":{"rendered":"Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong UX: Danh s\u00e1ch ki\u1ec3m tra c\u00e1c l\u1ed7i c\u1ea7n tr\u00e1nh t\u1eeb s\u1edbm"},"content":{"rendered":"<p>Thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m s\u1ed1 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ch\u1ecdn m\u00e0u s\u1eafc hay s\u1eafp x\u1ebfp c\u00e1c l\u01b0\u1edbi b\u1ed1 c\u1ee5c. Tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng (UX) n\u1eb1m \u1edf giao \u0111i\u1ec3m gi\u1eefa t\u00e2m l\u00fd h\u1ecdc, t\u00ednh n\u0103ng v\u00e0 m\u1ee5c ti\u00eau kinh doanh. Khi nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y kh\u00f4ng \u0111\u1ed3ng b\u1ed9, ng\u01b0\u1eddi d\u00f9ng s\u1ebd g\u1eb7p kh\u00f3 kh\u0103n d\u1eabn \u0111\u1ebfn t\u1eeb ch\u1ed1i s\u1eed d\u1ee5ng v\u00e0 c\u1ea3m gi\u00e1c kh\u00f4ng h\u00e0i l\u00f2ng. Nhi\u1ec1u \u0111\u1ed9i ng\u0169 ch\u1ec9 ph\u00e1t hi\u1ec7n nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y sau khi ra m\u1eaft, th\u01b0\u1eddng qu\u00e1 mu\u1ed9n \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c thay \u0111\u1ed5i ti\u1ebft ki\u1ec7m chi ph\u00ed. M\u1ee5c ti\u00eau l\u00e0 nh\u1eadn di\u1ec7n v\u00e0 gi\u1ea3m thi\u1ec3u nh\u1eefng sai l\u1ea7m n\u00e0y trong giai \u0111o\u1ea1n kh\u00e1i ni\u1ec7m v\u00e0 ph\u00e1t tri\u1ec3n ban \u0111\u1ea7u.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn nh\u1ea5t trong nghi\u00ean c\u1ee9u ng\u01b0\u1eddi d\u00f9ng, ki\u1ebfn tr\u00fac th\u00f4ng tin, thi\u1ebft k\u1ebf t\u01b0\u01a1ng t\u00e1c v\u00e0 x\u00e1c th\u1ef1c. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 nh\u1eefng m\u1eabu h\u00ecnh n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng t\u00f4n tr\u1ecdng th\u1eddi gian v\u00e0 t\u1ea3i nh\u1eadn th\u1ee9c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. Danh s\u00e1ch ki\u1ec3m tra d\u01b0\u1edbi \u0111\u00e2y s\u1ebd l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf, qu\u1ea3n l\u00fd s\u1ea3n ph\u1ea9m v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ec3 ki\u1ec3m tra c\u00f4ng vi\u1ec7c c\u1ee7a h\u1ecd tr\u01b0\u1edbc khi c\u00f4ng b\u1ed1 r\u1ed9ng r\u00e3i.<\/p>\n<h2>1. B\u1ecf qua nghi\u00ean c\u1ee9u ng\u01b0\u1eddi d\u00f9ng v\u00e0 s\u1ef1 th\u1ea5u c\u1ea3m \ud83e\uddd0<\/h2>\n<p>M\u1ed9t trong nh\u1eefng sai l\u1ea7m g\u00e2y h\u1ea1i nh\u1ea5t x\u1ea3y ra ngay t\u1eeb \u0111\u1ea7u d\u1ef1 \u00e1n. C\u00e1c nh\u00f3m th\u01b0\u1eddng d\u1ef1a v\u00e0o nh\u1eefng gi\u1ea3 \u0111\u1ecbnh n\u1ed9i b\u1ed9 thay v\u00ec d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c t\u1eeb ng\u01b0\u1eddi d\u00f9ng th\u1ef1c t\u1ebf. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn c\u00e1c gi\u1ea3i ph\u00e1p gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 m\u00e0 kh\u00f4ng ai \u0111ang g\u1eb7p ph\u1ea3i, ho\u1eb7c gi\u1ea3i quy\u1ebft theo c\u00e1ch c\u1ea3m gi\u00e1c thi\u1ebfu t\u1ef1 nhi\u00ean.<\/p>\n<ul>\n<li><strong>Gi\u1ea3 \u0111\u1ecbnh so v\u1edbi Th\u1ef1c t\u1ebf:<\/strong>C\u00e1c b\u00ean li\u00ean quan c\u00f3 th\u1ec3 cho r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng c\u1ea7n t\u00ednh n\u0103ng X, nh\u01b0ng nghi\u00ean c\u1ee9u cho th\u1ea5y h\u1ecd ch\u1ec9 mu\u1ed1n truy c\u1eadp nhanh h\u01a1n v\u00e0o t\u00ednh n\u0103ng Y.<\/li>\n<li><strong>Thi\u1ebfu nh\u00e2n v\u1eadt \u0111\u1ea1i di\u1ec7n (Personas):<\/strong>Thi\u1ebft k\u1ebf cho &#8216;m\u1ecdi ng\u01b0\u1eddi&#8217; th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn vi\u1ec7c thi\u1ebft k\u1ebf cho kh\u00f4ng ai c\u1ea3. Nh\u1eefng m\u1eabu ng\u01b0\u1eddi d\u00f9ng c\u1ee5 th\u1ec3 gi\u00fap t\u1eadp trung c\u00e1c quy\u1ebft \u0111\u1ecbnh.<\/li>\n<li><strong>B\u1ecf qua b\u1ed1i c\u1ea3nh:<\/strong>Hi\u1ec3u r\u00f5 ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp s\u1ea3n ph\u1ea9m \u1edf \u0111\u00e2u v\u00e0 nh\u01b0 th\u1ebf n\u00e0o l\u00e0 \u0111i\u1ec1u r\u1ea5t quan tr\u1ecdng. M\u1eabu h\u00e0nh vi s\u1eed d\u1ee5ng tr\u00ean di \u0111\u1ed9ng kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t so v\u1edbi tr\u00ean m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n.<\/li>\n<\/ul>\n<p>Khi b\u1ea1n b\u1ecf qua c\u00e1c cu\u1ed9c ph\u1ecfng v\u1ea5n, kh\u1ea3o s\u00e1t ho\u1eb7c nghi\u00ean c\u1ee9u quan s\u00e1t, b\u1ea1n \u0111ang \u0111\u1ed1i m\u1eb7t v\u1edbi nguy c\u01a1 x\u00e2y d\u1ef1ng s\u1ea3n ph\u1ea9m d\u1ef1a tr\u00ean m\u1ed9t c\u00e2u chuy\u1ec7n kh\u00f4ng t\u1ed3n t\u1ea1i. C\u00e1c quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u s\u1ebd gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u00e2y d\u1ef1ng c\u00e1c t\u00ednh n\u0103ng kh\u00f4ng mong mu\u1ed1n. Giai \u0111o\u1ea1n n\u00e0y \u0111\u1eb7t n\u1ec1n m\u00f3ng cho to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi s\u1ea3n ph\u1ea9m.<\/p>\n<h2>2. Ki\u1ebfn tr\u00fac th\u00f4ng tin k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng (IA) \ud83c\udfd7\ufe0f<\/h2>\n<p>Ki\u1ebfn tr\u00fac th\u00f4ng tin l\u00e0 thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c m\u00f4i tr\u01b0\u1eddng th\u00f4ng tin chung. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 t\u00ecm th\u1ea5y \u0111i\u1ec1u h\u1ecd c\u1ea7n trong v\u00f2ng ba l\u1ea7n nh\u1ea5p chu\u1ed9t, ki\u1ebfn tr\u00fac n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb l\u1ed7i. M\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p g\u00e2y nh\u1ea7m l\u1eabn s\u1ebd t\u1ea1o ra qu\u00e1 t\u1ea3i nh\u1eadn th\u1ee9c v\u00e0 c\u1ea3m gi\u00e1c b\u1ef1c b\u1ed9i.<\/p>\n<h3>Nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn trong ki\u1ebfn tr\u00fac th\u00f4ng tin<\/h3>\n<ul>\n<li><strong>Nh\u00e3n d\u1eabn d\u1ee5 sai:<\/strong>S\u1eed d\u1ee5ng thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt thay v\u00ec ng\u00f4n ng\u1eef \u0111\u01a1n gi\u1ea3n s\u1ebd khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng b\u1ed1i r\u1ed1i. V\u00ed d\u1ee5, \u201cTham s\u1ed1 truy v\u1ea5n\u201d kh\u00f3 hi\u1ec3u h\u01a1n \u201cB\u1ed9 l\u1ecdc\u201d.<\/li>\n<li><strong>S\u1eafp x\u1ebfp qu\u00e1 s\u00e2u:<\/strong>\u1ea8n c\u00e1c thao t\u00e1c quan tr\u1ecdng n\u0103m c\u1ea5p \u0111\u1ed9 s\u00e2u trong menu bu\u1ed9c ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i di chuy\u1ec3n m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft.<\/li>\n<li><strong>S\u1eafp x\u1ebfp kh\u00f4ng nh\u1ea5t qu\u00e1n:<\/strong>C\u00e1c m\u1ee5c li\u00ean quan n\u00ean \u0111\u01b0\u1ee3c nh\u00f3m h\u1ee3p l\u00fd. N\u1ebfu \u201cC\u00e0i \u0111\u1eb7t\u201d xu\u1ea5t hi\u1ec7n \u1edf \u0111\u1ea7u trang v\u00e0 ch\u00e2n trang m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng, s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn.<\/li>\n<li><strong>Thi\u1ebfu t\u00ednh n\u0103ng t\u00ecm ki\u1ebfm:<\/strong>\u0110\u1ed1i v\u1edbi c\u00e1c trang web c\u00f3 l\u01b0\u1ee3ng n\u1ed9i dung l\u1edbn, thanh t\u00ecm ki\u1ebfm m\u1ea1nh m\u1ebd l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu. Ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng th\u00edch t\u00ecm ki\u1ebfm h\u01a1n l\u00e0 l\u01b0\u1edbt qua.<\/li>\n<\/ul>\n<p>S\u01a1 \u0111\u1ed3 trang r\u00f5 r\u00e0ng v\u00e0 c\u00e1c m\u1eabu \u0111i\u1ec1u h\u01b0\u1edbng nh\u1ea5t qu\u00e1n gi\u00fap ng\u01b0\u1eddi d\u00f9ng x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh nh\u1eadn th\u1ee9c v\u1ec1 s\u1ea3n ph\u1ea9m. \u0110i\u1ec1u n\u00e0y gi\u1ea3m th\u1eddi gian t\u00ecm ki\u1ebfm v\u00e0 t\u0103ng th\u1eddi gian t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u1ed9i dung.<\/p>\n<h2>3. Thi\u1ebfu ph\u1ea3n h\u1ed3i v\u00e0 tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng \ud83d\udd04<\/h2>\n<p>Ng\u01b0\u1eddi d\u00f9ng c\u1ea7n bi\u1ebft h\u00e0nh \u0111\u1ed9ng c\u1ee7a h\u1ecd \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng nh\u1ea5n n\u00fat m\u00e0 kh\u00f4ng c\u00f3 g\u00ec x\u1ea3y ra, h\u1ecd s\u1ebd nh\u1ea5n l\u1ea1i, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c g\u1eedi tr\u00f9ng l\u1eb7p. \u0110\u00e2y l\u00e0 vi ph\u1ea1m m\u1ed9t nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i v\u1ec1 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng.<\/p>\n<h3>C\u00e1c c\u01a1 ch\u1ebf ph\u1ea3n h\u1ed3i c\u1ea7n tri\u1ec3n khai<\/h3>\n<ul>\n<li><strong>Thay \u0111\u1ed5i h\u00ecnh \u1ea3nh:<\/strong>C\u00e1c n\u00fat n\u00ean thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i (di chu\u1ed9t qua, \u0111ang ho\u1ea1t \u0111\u1ed9ng, v\u00f4 hi\u1ec7u h\u00f3a) \u0111\u1ec3 th\u1ec3 hi\u1ec7n t\u00ednh t\u01b0\u01a1ng t\u00e1c.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i \u0111ang t\u1ea3i:<\/strong> Khi d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c t\u1ea3i, h\u00e3y hi\u1ec3n th\u1ecb v\u00f2ng xoay ho\u1eb7c thanh ti\u1ebfn tr\u00ecnh. S\u1ef1 im l\u1eb7ng ng\u1ee5 \u00fd th\u1ea5t b\u1ea1i.<\/li>\n<li><strong>Th\u00f4ng b\u00e1o th\u00e0nh c\u00f4ng:<\/strong>X\u00e1c nh\u1eadn h\u00e0nh \u0111\u1ed9ng m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng. \u201cS\u1ea3n ph\u1ea9m \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o gi\u1ecf h\u00e0ng\u201d t\u1ed1t h\u01a1n l\u00e0 l\u00e0m m\u1edbi m\u00e0 kh\u00f4ng th\u00f4ng b\u00e1o.<\/li>\n<li><strong>X\u1eed l\u00fd l\u1ed7i:<\/strong>L\u1ed7i n\u00ean gi\u1ea3i th\u00edch \u0111i\u1ec1u g\u00ec \u0111\u00e3 x\u1ea3y ra v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c, ch\u1ee9 kh\u00f4ng ch\u1ec9 hi\u1ec3n th\u1ecb m\u1ed9t m\u00e3 s\u1ed1.<\/li>\n<\/ul>\n<p>Kh\u00f4ng c\u00f3 ph\u1ea3n h\u1ed3i, ng\u01b0\u1eddi d\u00f9ng c\u1ea3m th\u1ea5y b\u1ea5t l\u1ef1c. H\u1ecd kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n k\u1ebft qu\u1ea3 c\u1ee7a c\u00e1c t\u01b0\u01a1ng t\u00e1c. C\u00e1c v\u00f2ng ph\u1ea3n h\u1ed3i nh\u1ea5t qu\u00e1n x\u00e2y d\u1ef1ng ni\u1ec1m tin v\u00e0 s\u1ef1 t\u1ef1 tin v\u00e0o giao di\u1ec7n.<\/p>\n<h2>4. Nh\u1eefng thi\u1ebfu s\u00f3t v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp \u267f<\/h2>\n<p>Kh\u1ea3 n\u0103ng truy c\u1eadp kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec1u \u0111\u01b0\u1ee3c c\u00e2n nh\u1eafc sau c\u00f9ng; \u0111\u00f3 l\u00e0 y\u00eau c\u1ea7u c\u1ed1t l\u00f5i. Thi\u1ebft k\u1ebf cho ng\u01b0\u1eddi khuy\u1ebft t\u1eadt th\u01b0\u1eddng c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m cho t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi. B\u1ecf qua c\u00e1c ti\u00eau chu\u1ea9n kh\u1ea3 n\u0103ng truy c\u1eadp c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 ph\u00e1p l\u00fd v\u00e0 lo\u1ea1i b\u1ecf m\u1ed9t ph\u1ea7n l\u1edbn kh\u00e1n gi\u1ea3 c\u1ee7a b\u1ea1n.<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u s\u1eafc:<\/strong>V\u0103n b\u1ea3n ph\u1ea3i c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n \u0111\u1ee7 so v\u1edbi n\u1ec1n. \u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n th\u1ea5p khi\u1ebfn vi\u1ec7c \u0111\u1ecdc tr\u1edf n\u00ean kh\u00f3 kh\u0103n \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi c\u00f3 khi\u1ebfm khuy\u1ebft th\u1ecb gi\u00e1c.<\/li>\n<li><strong>\u0110i\u1ec1u h\u01b0\u1edbng b\u1eb1ng b\u00e0n ph\u00edm:<\/strong>Ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng chu\u1ed9t ph\u1ea3i c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i qua t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u00e1c b\u1eb1ng ph\u00edm Tab.<\/li>\n<li><strong>C\u00e1c tr\u00ecnh \u0111\u1ecdc m\u00e0n h\u00ecnh:<\/strong>H\u00ecnh \u1ea3nh c\u1ea7n c\u00f3 v\u0103n b\u1ea3n thay th\u1ebf. C\u00e1c tr\u01b0\u1eddng bi\u1ec3u m\u1eabu c\u1ea7n c\u00f3 nh\u00e3n. N\u1ed9i dung \u0111\u1ed9ng ph\u1ea3i \u0111\u01b0\u1ee3c th\u00f4ng b\u00e1o.<\/li>\n<li><strong>Ch\u1ec9 b\u00e1o t\u1eadp trung:<\/strong>Khi \u0111i\u1ec1u h\u01b0\u1edbng b\u1eb1ng b\u00e0n ph\u00edm, ph\u1ea7n t\u1eed \u0111\u01b0\u1ee3c t\u1eadp trung ph\u1ea3i hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n<p>X\u00e2y d\u1ef1ng m\u1ed9t c\u00e1ch bao dung \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c b\u1edfi \u0111\u00f4ng \u0111\u1ea3o ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t. \u0110i\u1ec1u n\u00e0y c\u0169ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c nguy\u00ean t\u1eafc thi\u1ebft k\u1ebf \u0111\u1ea1o \u0111\u1ee9c v\u00e0 th\u01b0\u1eddng c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t SEO nh\u1edd c\u1ea5u tr\u00fac ng\u1eef ngh\u0129a t\u1ed1t h\u01a1n.<\/p>\n<h2>5. V\u1ea5n \u0111\u1ec1 di \u0111\u1ed9ng v\u00e0 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng \ud83d\udcf1<\/h2>\n<p>V\u1edbi l\u01b0\u1ee3ng truy c\u1eadp di \u0111\u1ed9ng chi\u1ebfm \u01b0u th\u1ebf trong vi\u1ec7c s\u1eed d\u1ee5ng web, b\u1ecf qua t\u1ed1i \u01b0u h\u00f3a di \u0111\u1ed9ng l\u00e0 m\u1ed9t sai l\u1ea7m nghi\u00eam tr\u1ecdng. M\u1ed9t trang web ho\u1ea1t \u0111\u1ed9ng t\u1ed1t tr\u00ean m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n nh\u01b0ng b\u1ecb l\u1ed7i tr\u00ean \u0111i\u1ec7n tho\u1ea1i s\u1ebd m\u1ea5t \u0111i ph\u1ea7n l\u1edbn ng\u01b0\u1eddi d\u00f9ng ti\u1ec1m n\u0103ng.<\/p>\n<h3>B\u1ea3ng ki\u1ec3m tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng di \u0111\u1ed9ng<\/h3>\n<ul>\n<li><strong>K\u00edch th\u01b0\u1edbc v\u00f9ng ch\u1ea1m:<\/strong>N\u00fat b\u1ea5m v\u00e0 li\u00ean k\u1ebft ph\u1ea3i \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ch\u1ea1m ch\u00ednh x\u00e1c. C\u00e1c m\u1ee5c nh\u1ecf d\u1ec5 d\u1eabn \u0111\u1ebfn nh\u1ea5p nh\u1ea7m.<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t khung nh\u00ecn (viewport):<\/strong>\u0110\u1ea3m b\u1ea3o trang hi\u1ec3n th\u1ecb \u0111\u00fang t\u1ef7 l\u1ec7 tr\u00ean c\u00e1c k\u00edch th\u01b0\u1edbc m\u00e0n h\u00ecnh kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n cu\u1ed9n ngang.<\/li>\n<li><strong>Nh\u1eadp li\u1ec7u bi\u1ec3u m\u1eabu:<\/strong>S\u1eed d\u1ee5ng ki\u1ec3u b\u00e0n ph\u00edm ph\u00f9 h\u1ee3p (v\u00ed d\u1ee5: b\u00e0n ph\u00edm s\u1ed1 cho s\u1ed1 \u0111i\u1ec7n tho\u1ea1i) \u0111\u1ec3 gi\u1ea3m thi\u1ec3u kh\u00f3 kh\u0103n khi nh\u1eadp li\u1ec7u.<\/li>\n<li><strong>Hi\u1ec7u su\u1ea5t:<\/strong>M\u1ea1ng di \u0111\u1ed9ng c\u00f3 th\u1ec3 ch\u1eadm h\u01a1n. T\u1ed1i \u01b0u h\u00f3a h\u00ecnh \u1ea3nh v\u00e0 m\u00e3 script \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u1eddi gian t\u1ea3i nhanh.<\/li>\n<\/ul>\n<p>Thi\u1ebft k\u1ebf th\u00edch \u1ee9ng kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 thu nh\u1ecf b\u1ed1 c\u1ee5c m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. N\u00f3 \u0111\u00f2i h\u1ecfi ph\u1ea3i t\u00e1i c\u1ea5u tr\u00fac th\u1ee9 t\u1ef1 \u01b0u ti\u00ean v\u00e0 c\u00e1c m\u1eabu t\u01b0\u01a1ng t\u00e1c cho m\u00e0n h\u00ecnh nh\u1ecf v\u00e0 giao di\u1ec7n ch\u1ea1m.<\/p>\n<h2>6. B\u1ecf qua ki\u1ec3m th\u1eed kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng \ud83e\uddea<\/h2>\n<p>C\u00e1c nh\u00f3m n\u1ed9i b\u1ed9 th\u01b0\u1eddng ph\u1ea3i ch\u1ecbu \u0111\u1ef1ng &#8216;L\u1eddi nguy\u1ec1n Ki\u1ebfn th\u1ee9c&#8217;. B\u1ea1n bi\u1ebft c\u00e1ch s\u1ea3n ph\u1ea9m ho\u1ea1t \u0111\u1ed9ng, n\u00ean b\u1ea1n cho r\u1eb1ng ng\u01b0\u1eddi kh\u00e1c c\u0169ng s\u1ebd bi\u1ebft. Gi\u1ea3 \u0111\u1ecbnh n\u00e0y r\u1ea5t nguy hi\u1ec3m. Ki\u1ec3m th\u1eed kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng v\u1edbi ng\u01b0\u1eddi d\u00f9ng th\u1ef1c t\u1ebf s\u1ebd ph\u00e1t hi\u1ec7n ra nh\u1eefng kho\u1ea3ng tr\u1ed1ng v\u1ec1 logic m\u00e0 c\u00e1c \u0111\u00e1nh gi\u00e1 n\u1ed9i b\u1ed9 b\u1ecf qua.<\/p>\n<ul>\n<li><strong>Ki\u1ec3m th\u1eed \u0111\u1ecbnh h\u00ecnh:<\/strong>Ki\u1ec3m th\u1eed c\u00e1c m\u1eabu th\u1eed s\u1edbm \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 l\u1edbn tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u ph\u00e1t tri\u1ec3n.<\/li>\n<li><strong>Ki\u1ec3m th\u1eed t\u1ed5ng k\u1ebft:<\/strong>Ki\u1ec3m th\u1eed s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng \u0111\u1ec3 x\u00e1c nh\u1eadn hi\u1ec7u su\u1ea5t v\u00e0 s\u1ef1 h\u00e0i l\u00f2ng.<\/li>\n<li><strong>Quan s\u00e1t:<\/strong>Quan s\u00e1t ng\u01b0\u1eddi d\u00f9ng v\u1ea5t v\u1ea3. \u0110\u1eebng gi\u00fap h\u1ecd. S\u1ef1 b\u1ed1i r\u1ed1i c\u1ee7a h\u1ecd ch\u00ednh l\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>Quy tr\u00ecnh l\u1eb7p l\u1ea1i:<\/strong>Ki\u1ec3m th\u1eed kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n duy nh\u1ea5t. N\u00f3 n\u00ean di\u1ec5n ra trong su\u1ed1t chu k\u1ef3 ph\u00e1t tri\u1ec3n.<\/li>\n<\/ul>\n<p>Ki\u1ec3m th\u1eed t\u1ed1n ti\u1ec1n v\u00e0 th\u1eddi gian, nh\u01b0ng n\u00f3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c nhi\u1ec1u h\u01a1n nh\u1edd ng\u0103n ng\u1eeba c\u00e1c s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m sau khi ra m\u1eaft. N\u00f3 cung c\u1ea5p b\u1eb1ng ch\u1ee9ng kh\u00e1ch quan v\u1ec1 \u0111i\u1ec1u g\u00ec ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111i\u1ec1u g\u00ec kh\u00f4ng.<\/p>\n<h2>7. Xung \u0111\u1ed9t v\u1ec1 n\u1ed9i dung v\u00e0 vi\u1ebft n\u1ed9i dung \ud83d\udcdd<\/h2>\n<p>UX kh\u00f4ng ch\u1ec9 l\u00e0 h\u00ecnh \u1ea3nh; n\u00f3 c\u00f2n l\u00e0 ng\u00f4n ng\u1eef. N\u1ed9i dung k\u00e9m t\u1ea1o ra r\u00e0o c\u1ea3n trong vi\u1ec7c hi\u1ec3u. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i \u0111\u1ecdc ba \u0111o\u1ea1n v\u0103n \u0111\u1ec3 hi\u1ec3u m\u1ed9t h\u00e0nh \u0111\u1ed9ng \u0111\u01a1n gi\u1ea3n, thi\u1ebft k\u1ebf \u0111\u00e3 th\u1ea5t b\u1ea1i.<\/p>\n<h3>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t trong vi\u1ebft n\u1ed9i dung<\/h3>\n<ul>\n<li><strong>R\u00f5 r\u00e0ng:<\/strong>D\u00f9ng t\u1eeb \u0111\u01a1n gi\u1ea3n. Tr\u00e1nh d\u00f9ng t\u1eeb chuy\u00ean m\u00f4n v\u00e0 ng\u00f4n ng\u1eef c\u00f4ng s\u1edf.<\/li>\n<li><strong>Ng\u1eafn g\u1ecdn:<\/strong>Gi\u1eef v\u0103n b\u1ea3n ng\u1eafn g\u1ecdn. Ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng qu\u00e9t trang thay v\u00ec \u0111\u1ecdc t\u1eebng t\u1eeb.<\/li>\n<li><strong>Gi\u1ecdng \u0111i\u1ec7u:<\/strong>\u0110\u1ea3m b\u1ea3o gi\u1ecdng \u0111i\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi th\u01b0\u01a1ng hi\u1ec7u v\u00e0 b\u1ed1i c\u1ea3nh. \u1ee8ng d\u1ee5ng ng\u00e2n h\u00e0ng nghi\u00eam t\u00fac c\u1ea7n m\u1ed9t gi\u1ecdng \u0111i\u1ec7u kh\u00e1c v\u1edbi n\u1ec1n t\u1ea3ng tr\u00f2 ch\u01a1i.<\/li>\n<li><strong>L\u1eddi k\u00eau g\u1ecdi h\u00e0nh \u0111\u1ed9ng (CTA):<\/strong>CTA n\u00ean h\u01b0\u1edbng \u0111\u1ebfn h\u00e0nh \u0111\u1ed9ng. &#8216;G\u1eedi&#8217; t\u1ed1t h\u01a1n &#8216;Nh\u1ea5p v\u00e0o \u0111\u00e2y&#8217;.<\/li>\n<\/ul>\n<p>Chi\u1ebfn l\u01b0\u1ee3c n\u1ed9i dung l\u00e0 m\u1ed9t ph\u1ea7n trong quy tr\u00ecnh thi\u1ebft k\u1ebf UX. Nh\u1eefng t\u1eeb tr\u00ean m\u00e0n h\u00ecnh d\u1eabn d\u1eaft h\u00e0nh tr\u00ecnh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng k\u00e9m g\u00ec b\u1ed1 c\u1ee5c.<\/p>\n<h2>8. S\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n trong h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf \ud83c\udfa8<\/h2>\n<p>S\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng b\u1ed1i r\u1ed1i. N\u1ebfu n\u00fat b\u1ea5m tr\u00f4ng kh\u00e1c nhau tr\u00ean m\u1ecdi trang, ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i h\u1ecdc l\u1ea1i giao di\u1ec7n li\u00ean t\u1ee5c. M\u1ed9t h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf th\u1ed1ng nh\u1ea5t \u0111\u1ea3m b\u1ea3o t\u00ednh d\u1ef1 \u0111o\u00e1n v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<ul>\n<li><strong>Nh\u1ea5t qu\u00e1n v\u1ec1 h\u00ecnh \u1ea3nh:<\/strong>Duy tr\u00ec m\u00e0u s\u1eafc, ph\u00f4ng ch\u1eef v\u00e0 kho\u1ea3ng c\u00e1ch nh\u1ea5t qu\u00e1n tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c trang.<\/li>\n<li><strong>Nh\u1ea5t qu\u00e1n v\u1ec1 t\u01b0\u01a1ng t\u00e1c:<\/strong>H\u1ed9p tho\u1ea1i ph\u1ea3i m\u1edf theo c\u00f9ng m\u1ed9t c\u00e1ch \u1edf m\u1ecdi n\u01a1i. Tr\u1ea1ng th\u00e1i di chu\u1ed9t ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng nh\u1ea5t.<\/li>\n<li><strong>Nh\u1ea5t qu\u00e1n v\u1ec1 thu\u1eadt ng\u1eef:<\/strong>D\u00f9ng c\u00f9ng m\u1ed9t t\u1eeb cho c\u00f9ng m\u1ed9t h\u00e0nh \u0111\u1ed9ng. \u0110\u1eebng d\u00f9ng &#8216;\u0110\u0103ng xu\u1ea5t&#8217; tr\u00ean trang n\u00e0y v\u00e0 &#8216;Tho\u00e1t \u0111\u0103ng nh\u1eadp&#8217; tr\u00ean trang kh\u00e1c.<\/li>\n<li><strong>T\u00e1i s\u1eed d\u1ee5ng th\u00e0nh ph\u1ea7n:<\/strong>X\u00e2y d\u1ef1ng m\u1ed9t th\u01b0 vi\u1ec7n c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 l\u1ec7ch l\u1ea1c theo th\u1eddi gian.<\/li>\n<\/ul>\n<p>M\u1ed9t h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf m\u1ea1nh m\u1ebd s\u1ebd ph\u00e1t tri\u1ec3n c\u00f9ng s\u1ea3n ph\u1ea9m. N\u00f3 gi\u1ea3m b\u1edbt g\u00e1nh n\u1eb7ng cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng lu\u00f4n cao khi \u0111\u1ed9i ng\u0169 m\u1edf r\u1ed9ng.<\/p>\n<h2>9. T\u00f3m t\u1eaft danh s\u00e1ch ki\u1ec3m tra c\u00e1c sai l\u1ea7m \ud83d\udccb<\/h2>\n<p>\u0110\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh ki\u1ec3m to\u00e1n, h\u00e3y s\u1eed d\u1ee5ng b\u1ea3ng sau \u0111\u1ec3 xem x\u00e9t d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n tr\u01b0\u1edbc nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn.<\/p>\n<table>\n<thead>\n<tr>\n<th>Th\u1ec3 lo\u1ea1i<\/th>\n<th>Sai l\u1ea7m<\/th>\n<th>T\u00e1c \u0111\u1ed9ng<\/th>\n<th>Ng\u0103n ng\u1eeba<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Nghi\u00ean c\u1ee9u<\/td>\n<td>Gi\u1ea3 \u0111\u1ecbnh thay v\u00ec d\u1eef li\u1ec7u<\/td>\n<td>X\u00e2y d\u1ef1ng c\u00e1c t\u00ednh n\u0103ng kh\u00f4ng mong mu\u1ed1n<\/td>\n<td>Ti\u1ebfn h\u00e0nh ph\u1ecfng v\u1ea5n ng\u01b0\u1eddi d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec1u h\u01b0\u1edbng<\/td>\n<td>S\u1eafp x\u1ebfp qu\u00e1 s\u00e2u<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng b\u1ecb l\u1ea1c<\/td>\n<td>H\u1ea1n ch\u1ebf \u0111\u1ed9 s\u00e2u c\u1ee7a menu t\u1ed1i \u0111a 3 c\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ea3n h\u1ed3i<\/td>\n<td>Kh\u00f4ng c\u00f3 ph\u1ea3n h\u1ed3i v\u1edbi thao t\u00e1c<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng b\u1ed1i r\u1ed1i \/ nh\u1ea5p nh\u1ea7m nhi\u1ec1u l\u1ea7n<\/td>\n<td>Th\u1ef1c hi\u1ec7n tr\u1ea1ng th\u00e1i \u0111ang t\u1ea3i<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng truy c\u1eadp<\/td>\n<td>V\u0103n b\u1ea3n c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n th\u1ea5p<\/td>\n<td>Lo\u1ea1i tr\u1eeb ng\u01b0\u1eddi khuy\u1ebft t\u1eadt th\u1ecb gi\u00e1c<\/td>\n<td>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ki\u1ec3m tra \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n<\/td>\n<\/tr>\n<tr>\n<td>Di \u0111\u1ed9ng<\/td>\n<td>C\u00e1c m\u1ee5c ch\u1ea1m nh\u1ecf<\/td>\n<td>Nh\u1ea5p nh\u1ea7m v\u00e0 th\u1ea5t v\u1ecdng<\/td>\n<td>Thi\u1ebft k\u1ebf v\u1edbi k\u00edch th\u01b0\u1edbc m\u1ee5c ch\u1ea1m t\u1ed1i thi\u1ec3u 44px<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3m th\u1eed<\/td>\n<td>Kh\u00f4ng c\u00f3 x\u00e1c minh ng\u01b0\u1eddi d\u00f9ng<\/td>\n<td>C\u00e1c l\u1ed7i kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng ch\u01b0a \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n<\/td>\n<td>Th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng \u0111\u1ecbnh k\u1ef3<\/td>\n<\/tr>\n<tr>\n<td>N\u1ed9i dung<\/td>\n<td>Thu\u1eadt ng\u1eef chuy\u00ean m\u00f4n v\u00e0 \u0111\u1ed9 d\u00e0i<\/td>\n<td>Gi\u1ea3m kh\u1ea3 n\u0103ng hi\u1ec3u r\u00f5<\/td>\n<td>Vi\u1ebft cho r\u00f5 r\u00e0ng v\u00e0 ng\u1eafn g\u1ecdn<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh nh\u1ea5t qu\u00e1n<\/td>\n<td>C\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf \u0111a d\u1ea1ng<\/td>\n<td>\u0110\u1ed9 d\u1ed1c h\u1ecdc t\u1eadp t\u0103ng l\u00ean<\/td>\n<td>S\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>10. C\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 t\u1ed1c \u0111\u1ed9 \u26a1<\/h2>\n<p>Ngay c\u1ea3 thi\u1ebft k\u1ebf \u0111\u1eb9p nh\u1ea5t c\u0169ng th\u1ea5t b\u1ea1i n\u1ebfu n\u00f3 ch\u1eadm. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 s\u1ef1 ki\u00ean nh\u1eabn th\u1ea5p \u0111\u1ed1i v\u1edbi \u0111\u1ed9 tr\u1ec5. N\u1ebfu m\u1ed9t trang m\u1ea5t h\u01a1n v\u00e0i gi\u00e2y \u0111\u1ec3 t\u1ea3i, t\u1ef7 l\u1ec7 tho\u00e1t trang s\u1ebd t\u0103ng \u0111\u00e1ng k\u1ec3.<\/p>\n<ul>\n<li><strong>T\u1ed1i \u01b0u h\u00f3a h\u00ecnh \u1ea3nh:<\/strong> N\u00e9n h\u00ecnh \u1ea3nh m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng. S\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng hi\u1ec7n \u0111\u1ea1i nh\u01b0 WebP.<\/li>\n<li><strong>Chi\u1ebfn l\u01b0\u1ee3c b\u1ed9 nh\u1edb \u0111\u1ec7m:<\/strong> L\u01b0u tr\u1eef d\u1eef li\u1ec7u th\u01b0\u1eddng xuy\u00ean truy c\u1eadp \u1edf \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u1ec3 gi\u1ea3m y\u00eau c\u1ea7u m\u00e1y ch\u1ee7.<\/li>\n<li><strong>Thu g\u1ecdn m\u00e3 ngu\u1ed3n:<\/strong> Lo\u1ea1i b\u1ecf c\u00e1c k\u00fd t\u1ef1 kh\u00f4ng c\u1ea7n thi\u1ebft kh\u1ecfi t\u1ec7p m\u00e3 ngu\u1ed3n \u0111\u1ec3 gi\u1ea3m k\u00edch th\u01b0\u1edbc t\u1ec7p.<\/li>\n<li><strong>L\u1ea7n hi\u1ec3n th\u1ecb n\u1ed9i dung \u0111\u1ea7u ti\u00ean:<\/strong>\u01afu ti\u00ean hi\u1ec3n th\u1ecb n\u1ed9i dung c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u1edf ph\u1ea7n tr\u00ean c\u1ee7a m\u00e0n h\u00ecnh.<\/li>\n<\/ul>\n<p>Hi\u1ec7u su\u1ea5t l\u00e0 m\u1ed9t t\u00ednh n\u0103ng. Ng\u01b0\u1eddi d\u00f9ng c\u1ea3m nh\u1eadn c\u00e1c trang nhanh l\u00e0 \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n. T\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i v\u00e0 s\u1ef1 h\u00e0i l\u00f2ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2>11. Minh b\u1ea1ch v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 \ud83d\udd12<\/h2>\n<p>Ng\u01b0\u1eddi d\u00f9ng ng\u00e0y c\u00e0ng nh\u1eadn th\u1ee9c r\u00f5 v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0 d\u1eef li\u1ec7u. Che gi\u1ea5u c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng s\u1ebd l\u00e0m suy gi\u1ea3m ni\u1ec1m tin. Minh b\u1ea1ch v\u1ec1 c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<ul>\n<li><strong>Thu th\u1eadp d\u1eef li\u1ec7u:<\/strong>Ch\u1ec9 y\u00eau c\u1ea7u th\u00f4ng tin c\u1ea7n thi\u1ebft. Vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u qu\u00e1 m\u1ee9c s\u1ebd g\u00e2y nghi ng\u1edd.<\/li>\n<li><strong>Ch\u00ednh s\u00e1ch quy\u1ec1n ri\u00eang t\u01b0:<\/strong>\u0110\u1ea3m b\u1ea3o ch\u00fang d\u1ec5 t\u00ecm th\u1ea5y v\u00e0 \u0111\u1ecdc \u0111\u01b0\u1ee3c. Tr\u00e1nh ch\u00f4n ch\u00fang trong c\u00e1c ch\u00fa th\u00edch cu\u1ed1i trang.<\/li>\n<li><strong>Y\u00eau c\u1ea7u quy\u1ec1n truy c\u1eadp:<\/strong>Y\u00eau c\u1ea7u quy\u1ec1n truy c\u1eadp (m\u00e1y \u1ea3nh, v\u1ecb tr\u00ed) v\u00e0o th\u1eddi \u0111i\u1ec3m c\u1ea7n thi\u1ebft, ch\u1ee9 kh\u00f4ng ph\u1ea3i ngay t\u1eeb \u0111\u1ea7u.<\/li>\n<li><strong>Bi\u1ec3n hi\u1ec7u b\u1ea3o m\u1eadt:<\/strong>Hi\u1ec3n th\u1ecb c\u00e1c t\u00edn hi\u1ec7u tin c\u1eady trong quy tr\u00ecnh thanh to\u00e1n \u0111\u1ec3 l\u00e0m d\u1ecbu lo l\u1eafng cho ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n<p>T\u00f4n tr\u1ecdng quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng ch\u1ec9 l\u00e0 y\u00eau c\u1ea7u ph\u00e1p l\u00fd; \u0111\u00f3 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf. Giao ti\u1ebfp r\u00f5 r\u00e0ng v\u1ec1 vi\u1ec7c s\u1eed d\u1ee5ng d\u1eef li\u1ec7u s\u1ebd x\u00e2y d\u1ef1ng m\u1ed1i quan h\u1ec7 b\u1ec1n ch\u1eb7t h\u01a1n v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2>12. H\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng m\u1edbi v\u00e0 \u1ea5n t\u01b0\u1ee3ng ban \u0111\u1ea7u \ud83c\udf93<\/h2>\n<p>Nh\u1eefng ph\u00fat \u0111\u1ea7u ti\u00ean s\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m s\u1ebd quy\u1ebft \u0111\u1ecbnh t\u1ef7 l\u1ec7 gi\u1eef ch\u00e2n ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t quy tr\u00ecnh h\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng m\u1edbi g\u00e2y nh\u1ea7m l\u1eabn c\u00f3 th\u1ec3 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng r\u1eddi \u0111i tr\u01b0\u1edbc khi h\u1ecd nh\u1eadn ra gi\u00e1 tr\u1ecb.<\/p>\n<ul>\n<li><strong>C\u00f4ng khai t\u1eebng b\u01b0\u1edbc:<\/strong>Hi\u1ec3n th\u1ecb c\u00e1c t\u00ednh n\u0103ng khi ng\u01b0\u1eddi d\u00f9ng c\u1ea7n ch\u00fang. \u0110\u1eebng l\u00e0m cho h\u1ecd cho\u00e1ng ng\u1ee3p b\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c t\u00f9y ch\u1ecdn c\u00f9ng m\u1ed9t l\u00fac.<\/li>\n<li><strong>H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng:<\/strong>Gi\u1eef c\u00e1c h\u01b0\u1edbng d\u1eabn t\u01b0\u01a1ng t\u00e1c ng\u1eafn g\u1ecdn. \u0110\u1ec3 ng\u01b0\u1eddi d\u00f9ng kh\u00e1m ph\u00e1 m\u00e0 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n li\u00ean t\u1ee5c.<\/li>\n<li><strong>Tr\u1ea1ng th\u00e1i tr\u1ed1ng:<\/strong>Thi\u1ebft k\u1ebf c\u00e1c m\u00e0n h\u00ecnh xu\u1ea5t hi\u1ec7n tr\u01b0\u1edbc khi n\u1ed9i dung t\u1ed3n t\u1ea1i. H\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng bi\u1ebft \u0111i\u1ec1u g\u00ec c\u1ea7n l\u00e0m ti\u1ebfp theo.<\/li>\n<li><strong>\u0110\u1ec1 xu\u1ea5t gi\u00e1 tr\u1ecb:<\/strong>R\u00f5 r\u00e0ng n\u00eau b\u1eadt l\u1ee3i \u00edch c\u1ee7a s\u1ea3n ph\u1ea9m ngay t\u1eeb \u0111\u1ea7u.<\/li>\n<\/ul>\n<p>H\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng m\u1edbi l\u00e0 c\u00e2y c\u1ea7u n\u1ed1i gi\u1eefa vi\u1ec7c thu h\u00fat v\u00e0 k\u00edch ho\u1ea1t ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp tr\u01a1n tru \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng hi\u1ec3u ngay gi\u00e1 tr\u1ecb c\u1ed1t l\u00f5i.<\/p>\n<h2>13. Kh\u00f4i ph\u1ee5c sau l\u1ed7i v\u00e0 t\u00e0i nguy\u00ean h\u1ed7 tr\u1ee3 \ud83c\udd98<\/h2>\n<p>L\u1ed7i s\u1ebd x\u1ea3y ra. Thi\u1ebft k\u1ebf tr\u1ea1ng th\u00e1i l\u1ed7i quan tr\u1ecdng h\u01a1n vi\u1ec7c ng\u0103n ng\u1eeba l\u1ed7i. M\u1ed9t th\u00f4ng b\u00e1o l\u1ed7i h\u1eefu \u00edch c\u00f3 th\u1ec3 c\u1ee9u \u0111\u01b0\u1ee3c m\u1ed9t phi\u00ean l\u00e0m vi\u1ec7c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<ul>\n<li><strong>Ng\u00f4n ng\u1eef th\u00e2n thi\u1ec7n v\u1edbi con ng\u01b0\u1eddi:<\/strong>Tr\u00e1nh s\u1eed d\u1ee5ng m\u00e3 l\u1ed7i nh\u01b0 \u201c404\u201d. N\u00f3i \u201cTrang kh\u00f4ng t\u00ecm th\u1ea5y\u201d.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Cung c\u1ea5p li\u00ean k\u1ebft quay l\u1ea1i trang ch\u1ee7 ho\u1eb7c thanh t\u00ecm ki\u1ebfm.<\/li>\n<li><strong>Ng\u0103n ng\u1eeba:<\/strong>X\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o bi\u1ec3u m\u1eabu ngay l\u1eadp t\u1ee9c tr\u01b0\u1edbc khi g\u1eedi \u0111\u1ec3 ng\u0103n l\u1ed7i.<\/li>\n<li><strong>Truy c\u1eadp h\u1ed7 tr\u1ee3:<\/strong>Gi\u00fap t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3 d\u1ec5 ti\u1ebfp c\u1eadn trong su\u1ed1t h\u00e0nh tr\u00ecnh ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n<p>Khi c\u00f3 chuy\u1ec7n kh\u00f4ng may x\u1ea3y ra, h\u1ec7 th\u1ed1ng n\u00ean d\u1eabn d\u1eaft ng\u01b0\u1eddi d\u00f9ng quay l\u1ea1i \u0111\u00fang h\u01b0\u1edbng. \u0110i\u1ec1u n\u00e0y gi\u1ea3m b\u1edbt s\u1ef1 b\u1ef1c b\u1ed9i v\u00e0 h\u1ed7 tr\u1ee3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 t\u1ef1 ph\u1ee5c v\u1ee5.<\/p>\n<h2>14. Th\u1ee9 t\u1ef1 \u01b0u ti\u00ean tr\u1ef1c quan v\u00e0 kh\u1ea3 n\u0103ng qu\u00e9t nhanh \ud83d\udc41\ufe0f<\/h2>\n<p>Ng\u01b0\u1eddi d\u00f9ng qu\u00e9t n\u1ed9i dung \u0111\u1ec3 t\u00ecm th\u1ee9 h\u1ecd c\u1ea7n. Th\u1ee9 t\u1ef1 \u01b0u ti\u00ean tr\u1ef1c quan d\u1eabn m\u1eaft h\u1ecd \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t tr\u01b0\u1edbc ti\u00ean.<\/p>\n<ul>\n<li><strong>K\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 \u0111\u1eadm:<\/strong>S\u1eed d\u1ee5ng ch\u1eef l\u1edbn, \u0111\u1eadm cho ti\u00eau \u0111\u1ec1. Ch\u1eef nh\u1ecf h\u01a1n cho chi ti\u1ebft.<\/li>\n<li><strong>Kho\u1ea3ng tr\u1ed1ng:<\/strong> S\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch \u0111\u1ec3 t\u00e1ch bi\u1ec7t c\u00e1c ph\u1ea7n ri\u00eang bi\u1ec7t v\u00e0 gi\u1ea3m s\u1ef1 l\u1ed9n x\u1ed9n.<\/li>\n<li><strong>S\u1eed d\u1ee5ng m\u00e0u s\u1eafc:<\/strong>S\u1eed d\u1ee5ng m\u00e0u s\u1eafc \u0111\u1ec3 l\u00e0m n\u1ed5i b\u1eadt c\u00e1c y\u1ebfu t\u1ed1 h\u00e0nh \u0111\u1ed9ng, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u1ec3 trang tr\u00ed.<\/li>\n<li><strong>M\u1eabu Z:<\/strong>\u0110\u1eb7t th\u00f4ng tin quan tr\u1ecdng d\u1ecdc theo \u0111\u01b0\u1eddng qu\u00e9t t\u1ef1 nhi\u00ean c\u1ee7a m\u1eaft.<\/li>\n<\/ul>\n<p>Th\u1ee9 t\u1ef1 th\u1ecb gi\u00e1c hi\u1ec7u qu\u1ea3 gi\u00fap gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c. N\u00f3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng x\u1eed l\u00fd th\u00f4ng tin nhanh ch\u00f3ng v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh m\u1ed9t c\u00e1ch t\u1ef1 tin.<\/p>\n<h2>15. T\u00edch h\u1ee3p gi\u00e1m s\u00e1t v\u00e0 ph\u00e2n t\u00edch \ud83d\udcca<\/h2>\n<p>Sau khi ph\u00e1t h\u00e0nh, b\u1ea1n ph\u1ea3i theo d\u00f5i c\u00e1ch ng\u01b0\u1eddi d\u00f9ng th\u1ef1c s\u1ef1 h\u00e0nh x\u1eed. Ph\u00e2n t\u00edch cung c\u1ea5p d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 ti\u1ebfp t\u1ee5c c\u1ea3i ti\u1ebfn.<\/p>\n<ul>\n<li><strong>B\u1ea3n \u0111\u1ed3 nhi\u1ec7t:<\/strong>Xem n\u01a1i ng\u01b0\u1eddi d\u00f9ng nh\u1ea5p chu\u1ed9t v\u00e0 cu\u1ed9n trang th\u01b0\u1eddng xuy\u00ean nh\u1ea5t.<\/li>\n<li><strong>Ph\u00e2n t\u00edch \u1ed1ng d\u1eabn:<\/strong>X\u00e1c \u0111\u1ecbnh n\u01a1i ng\u01b0\u1eddi d\u00f9ng b\u1ecf cu\u1ed9c trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i.<\/li>\n<li><strong>Ghi l\u1ea1i phi\u00ean l\u00e0m vi\u1ec7c:<\/strong>Xem c\u00e1c b\u1ea3n ghi \u0111\u1ec3 th\u1ea5y nh\u1eefng kh\u00f3 kh\u0103n th\u1ef1c t\u1ebf trong th\u1eddi gian th\u1ef1c.<\/li>\n<li><strong>Theo d\u00f5i m\u1ee5c ti\u00eau:<\/strong>X\u00e1c \u0111\u1ecbnh h\u00ecnh \u1ea3nh th\u00e0nh c\u00f4ng l\u00e0 nh\u01b0 th\u1ebf n\u00e0o v\u00e0 \u0111o l\u01b0\u1eddng n\u00f3.<\/li>\n<\/ul>\n<p>Vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u c\u1ea7n \u0111\u01b0\u1ee3c duy tr\u00ec li\u00ean t\u1ee5c. N\u00f3 cung c\u1ea5p th\u00f4ng tin cho v\u00f2ng c\u1ea3i ti\u1ebfn ti\u1ebfp theo v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m ph\u00e1t tri\u1ec3n theo nhu c\u1ea7u ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2>Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 k\u1ef7 lu\u1eadt UX \ud83d\udee1\ufe0f<\/h2>\n<p>T\u1ea1o ra tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u00f2i h\u1ecfi k\u1ef7 lu\u1eadt v\u00e0 s\u1ef1 ch\u00fa \u00fd \u0111\u1ebfn chi ti\u1ebft. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 tu\u00e2n theo m\u1ed9t b\u1ed9 quy t\u1eafc c\u1ee9ng nh\u1eafc, m\u00e0 l\u00e0 hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean t\u1eafc \u0111\u1eb1ng sau ch\u00fang. B\u1eb1ng c\u00e1ch tr\u00e1nh nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn n\u00e0y, b\u1ea1n s\u1ebd t\u1ea1o ra m\u1ed9t s\u1ea3n ph\u1ea9m tr\u1ef1c quan, d\u1ec5 ti\u1ebfp c\u1eadn v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<p>Danh s\u00e1ch ki\u1ec3m tra \u0111\u01b0\u1ee3c cung c\u1ea5p \u1edf \u0111\u00e2y ch\u1ec9 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u. Khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n, mong \u0111\u1ee3i c\u1ee7a ng\u01b0\u1eddi d\u00f9ng c\u0169ng thay \u0111\u1ed5i theo. H\u1ecdc t\u1eadp v\u00e0 th\u00edch nghi li\u00ean t\u1ee5c l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec ti\u00eau chu\u1ea9n. \u0110\u1eb7t ng\u01b0\u1eddi d\u00f9ng l\u00ean h\u00e0ng \u0111\u1ea7u \u1edf m\u1ecdi giai \u0111o\u1ea1n qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng v\u00e0 th\u00e0nh c\u00f4ng l\u00e2u d\u00e0i.<\/p>\n<p>H\u00e3y nh\u1edb r\u1eb1ng UX l\u00e0 m\u1ed9t chu tr\u00ecnh. B\u1ea1n x\u00e2y d\u1ef1ng, \u0111o l\u01b0\u1eddng v\u00e0 h\u1ecdc h\u1ecfi. M\u1ee5c ti\u00eau l\u00e0 lo\u1ea1i b\u1ecf r\u00e0o c\u1ea3n, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u1ec3 l\u00e0m cho m\u1ecdi th\u1ee9 tr\u00f4ng \u0111\u1eb9p. Khi b\u1ea1n t\u1eadp trung gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u1ef1c s\u1ef1 cho con ng\u01b0\u1eddi th\u1eadt, thi\u1ebft k\u1ebf s\u1ebd t\u1ef1 nhi\u00ean theo k\u1ecbp.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m s\u1ed1 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ch\u1ecdn m\u00e0u s\u1eafc hay s\u1eafp x\u1ebfp c\u00e1c l\u01b0\u1edbi b\u1ed1 c\u1ee5c. Tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng (UX) n\u1eb1m \u1edf giao \u0111i\u1ec3m gi\u1eefa&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong UX: Danh s\u00e1ch ki\u1ec3m tra c\u00e1c l\u1ed7i c\u1ea7n tr\u00e1nh","_yoast_wpseo_metadesc":"Kh\u00e1m ph\u00e1 nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong thi\u1ebft k\u1ebf UX \u0111\u1ec3 tr\u00e1nh t\u1eeb s\u1edbm. M\u1ed9t danh s\u00e1ch ki\u1ec3m tra to\u00e0n di\u1ec7n bao g\u1ed3m nghi\u00ean c\u1ee9u, \u0111i\u1ec1u h\u01b0\u1edbng, kh\u1ea3 n\u0103ng truy c\u1eadp v\u00e0 ki\u1ec3m th\u1eed nh\u1eb1m c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[36],"tags":[40,42],"class_list":["post-894","post","type-post","status-publish","format-standard","hentry","category-user-experience","tag-academic","tag-ux-design"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong UX: Danh s\u00e1ch ki\u1ec3m tra c\u00e1c l\u1ed7i c\u1ea7n tr\u00e1nh<\/title>\n<meta name=\"description\" content=\"Kh\u00e1m ph\u00e1 nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong thi\u1ebft k\u1ebf UX \u0111\u1ec3 tr\u00e1nh t\u1eeb s\u1edbm. M\u1ed9t danh s\u00e1ch ki\u1ec3m tra to\u00e0n di\u1ec7n bao g\u1ed3m nghi\u00ean c\u1ee9u, \u0111i\u1ec1u h\u01b0\u1edbng, kh\u1ea3 n\u0103ng truy c\u1eadp v\u00e0 ki\u1ec3m th\u1eed nh\u1eb1m c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.visualize-ai.com\/vi\/common-pitfalls-in-ux-checklist-mistakes-to-avoid\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong UX: Danh s\u00e1ch ki\u1ec3m tra c\u00e1c l\u1ed7i c\u1ea7n tr\u00e1nh\" \/>\n<meta property=\"og:description\" content=\"Kh\u00e1m ph\u00e1 nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong thi\u1ebft k\u1ebf UX \u0111\u1ec3 tr\u00e1nh t\u1eeb s\u1edbm. 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