de bai : hay viet bai van (neu suy nghi ve) dung bao h phan xet nguoi khac motj cach de dang
mk chi can phan ban luanj thoi banj nao lm dc ca bai voi dan y thi mk xin them
lm on lm ho mk voi mai mk phai nop roi
mk ko co unikey nen cac ban tu hieu ho mk