/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: vannguyenthuy9 https://cdn.slidesharecdn.com/profile-photo-vannguyenthuy9-48x48.jpg?cb=1523504583 Ch但n c坦 kh担ng d��i nh動ng ��動畛�c c叩i n達o nhi畛�u n畉�p nh��n . Ng畛�c c坦 kh担ng c��ng nh動ng ��動畛�c c叩i b棚n trong chung t狸nh. Ph畉�n son 畛� m畛�c trung b狸nh nh動ng ��動畛�c c叩i ��畉�m ��ang kh担n kh辿o