/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ssuserc7aacd https://cdn.slidesharecdn.com/profile-photo-ssuserc7aacd-48x48.jpg?cb=1523608878 ึϸµà¸„ับ