Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
va phuong » va thuong, cac phuong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung ((va phuong) OR (he thong)) cong dan toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung ((va phuong) or (he thong)) cong dan toan cao*.