/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: lehunganh87 https://cdn.slidesharecdn.com/profile-photo-lehunganh87-48x48.jpg?cb=1523494531 Ai quan tâm tá»± tìm hiểu.