Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban
va dong » van dong, ha dong, xa dong

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: ho chieu sang - thanh trung va dong ((((cong dan) OR (cong tan))) OR (cong san)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung va dong ((((cong dan) or (cong tan))) or (cong san)) toan ban*.