Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu lang » chieu sang, hieu quang, nhieu tang
trang van » tran van, trang va, trong van
cong tac » cong ty
cong tan » cong thanh, cong ty, cong ha
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh trang van dong ((((cong tac) or (cong tan))) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trang van dong ((((cong tac) OR (cong tan))) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trang van dong ((((cong tac) or (cong tan))) or (cong san)) toan ban*.