/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: rainbow9041 https://cdn.slidesharecdn.com/profile-photo-rainbow9041-48x48.jpg?cb=1523381413 Lạc quan má»™t cách tiêu cá»±c =))