�ݺ�ߣshows by User: thaothanh142

�ݺ�ߣshows by User: thaothanh142 / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: thaothanh142 / �ݺ�ߣShare feed for �ݺ�ߣshows by User: thaothanh142 https://cdn.slidesharecdn.com/profile-photo-thaothanh142-48x48.jpg?cb=1523746014 Nếu phía trước là bờ tường, phía sau là con đường.. ..thì ta sẽ leo tường để tiến về phía trước, chứ ko quay đầu bước ngược về con đường đã qua. ^^