/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: leephuong10 https://cdn.slidesharecdn.com/profile-photo-leephuong10-48x48.jpg?cb=1523423480 vui vẻ...dá»… thÆ°Æ¡ng..