/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: nhocsunls https://cdn.slidesharecdn.com/profile-photo-nhocsunls-48x48.jpg?cb=1523669964 Tá»± tìm hiểu Ä‘i có khi lại hay đấy. :))