5 t\u00ecnh hu\u1ed1ng “kh\u00f4ng \u0111\u1ee1 \u0111\u01b0\u1ee3c” khi\u1ebfn th\u00ed sinh l\u1ee1 k\u1ef3 thi THPT qu\u1ed1c gia \u0111\u00e3 x\u1ea3y ra trong l\u1ecbch s\u1eed<\/a><\/blockquote><\/iframe>