ª = &#170 ;
« = &#171 ;
¬ = &#172 ;
® = &#174 ;
© = &#169 ;
™ = &#8482 ;
← = &#8592 ;
↑ = &#8593 ;
→ = &#8594 ;
↓ = &#8595 ;
↔ = &#8596 ;
xin luu_y:cac ky tu &#xxx va dau cham phay phai viet lien khong co dau khoang cach.chuc cac ban thanh cong