Kh\u00f4ng n\u00ean l\u1ea5y \u0111i\u1ec3m b\u00ecnh qu\u00e2n l\u1edbp 12 t\u00ednh v\u00e0o \u0111i\u1ec3m t\u1ed1t nghi\u1ec7p THPT \u0111\u1ec3 tr\u00e1nh s\u1ef1 ‘c\u1ea3 n\u1ec3’<\/a><\/blockquote><\/iframe>