/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: thanhphuongnguyen7503314 https://cdn.slidesharecdn.com/profile-photo-thanhphuongnguyen7503314-48x48.jpg?cb=1523505711 Nói ít hiểu nhiá»�u