/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: jirotran https://cdn.slidesharecdn.com/profile-photo-jirotran-48x48.jpg?cb=1523185625 20 tuoi va la nguoi kho hieu vl, den minh cung ko hieu dc minh... cac ban giup minh hieu minh thi tot:x