/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: nhanguyenquynh https://cdn.slidesharecdn.com/profile-photo-nhanguyenquynh-48x48.jpg?cb=1534160090 bạn tá»± tìm hiểu.....