khi minh vao work, exel thi xuat hien cua so <img src="http://i877.photobucket.com/albums/ab333/nh3b/9-29-201010-00-39AM.png" border="0" alt="" />[/IMG] va <img src="http://i877.photobucket.com/albums/ab333/nh3b/9-28-201010-11-36PM.png"...