L\u00f4 \u0111\u1ec1 ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c \u0111\u00f4ng \u0111\u1ea3o ng\u01b0\u1eddi ch\u01a1i \u1edf \u0111\u1ee7 m\u1ecdi \u0111\u1ed9 tu\u1ed5i y\u00eau th\u00edch. Tuy nhi\u00ean \u0111\u1ec3 th\u1eafng kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o v\u1eadn may m\u00e0 ng\u1ed3i ch\u1edd \u0111\u01b0\u1ee3c. Do v\u1eady nh\u1eefng b\u1ed9 s\u1ed1 \u0111\u1ec1<\/b> ra \u0111\u1eddi ch\u00ednh l\u00e0 s\u1ef1 \u0111\u00fac k\u1ebft kinh nghi\u1ec7m c\u1ee7a c\u00e1c b\u1eadc ti\u1ec1n b\u1ed1i \u0111i tr\u01b0\u1edbc. Nh\u1eb1m gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng t\u00ecm \u0111\u01b0\u1ee3c nh\u1eefng con s\u1ed1 chu\u1ea9n. V\u1eady c\u00f3 bao nhi\u00eau b\u1ed9 s\u1ed1 \u0111\u1ec1? G\u1ed3m nh\u1eefng con s\u1ed1 n\u00e0o?<\/p>\n M\u1ee5c l\u1ee5c<\/p>\n <\/i><\/p>\n<\/div>\n