/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: CngNguyn24 https://cdn.slidesharecdn.com/profile-photo-CngNguyn24-48x48.jpg?cb=1523320924 wellcome to yên bái city Ä‘Æ¡n giản, dá»… gần thế thôi