/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: PhamHang2 https://cdn.slidesharecdn.com/profile-photo-PhamHang2-48x48.jpg?cb=1523123582 Ch��m h畛�c c滴ng b畉�ng th畛�a,quan tr畛�ng l�� h畛�c ��炭ng c叩ch ,��畛�c ��炭ng s叩ch! sai mot ly di mot dam -uc' nhat' la k biet doi minh co' may' dam can phai di