Vay khong phai la van minh lam sao ...??? tot nhat la mot con dau co nhieu lua chon khac nhau cang tien bo hon...dung khong ...??? viet ra co khi sai do ma con lai chu khong dep nua..roi thi co doi luc doc khong ra voi dang toc ky ...viet tat va nhu ban thao vay ...???Ok tot lam ../,.