/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: khanhlinhdo731 https://cdn.slidesharecdn.com/profile-photo-khanhlinhdo731-48x48.jpg?cb=1523489731 luôn luôn lắng nghe, luôn luôn thay đổi :v