Perhaps you should try some spelling variations:
nhien lang » khien bang, hieu lang, nhan lang
hanh trang » thanh trung, canh tranh, hanh trinh
trang va » tran van, hang va
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan ban » van ban
va tong » va thong, va tuong, va trong
thien » thieu, tien, hien

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

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