/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: nguyenkhanhha18 https://cdn.slidesharecdn.com/profile-photo-nguyenkhanhha18-48x48.jpg?cb=1703926583 Tâm lí....lạc quan...