/ http://www.slideshare.net/images/logo.gif / �ݺ�ߣShare feed for �ݺ�ߣshows by User: vietnguyen177 https://cdn.slidesharecdn.com/profile-photo-vietnguyen177-48x48.jpg?cb=1523744164 You may only be one person to the world but you may be the world to one person. bình thường