/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: nguyenvanduy9 https://cdn.slidesharecdn.com/profile-photo-nguyenvanduy9-48x48.jpg?cb=1523445207 ko c坦 j ��叩ng n坦i c畉�. L�� ng動畛�i kh坦 t鱈nh, n坦ng t狸nh n畛�a