/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ThanhLuyen https://cdn.slidesharecdn.com/profile-photo-ThanhLuyen-48x48.jpg?cb=1523159565 cố gắng, cố gắng... nhÆ°ng... để làm gì chứ?...