�ݺ�ߣshows by User: tunglevan754

�ݺ�ߣshows by User: tunglevan754 / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: tunglevan754 / �ݺ�ߣShare feed for �ݺ�ߣshows by User: tunglevan754 https://cdn.slidesharecdn.com/profile-photo-tunglevan754-48x48.jpg?cb=1523691567 Còn quá nhiều điều để hoàn thiện.