Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
manh hang » manh thang, manh hung, minh hang
doi hieu » doi chieu, doc hieu, doi hien
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
than cap » khan cap, thanh lap, thanh cac
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - manh hang va nhung ((cong dan) or (cong tac)) ((than cap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - manh hang va nhung ((cong dan) OR (cong tac)) ((than cap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - manh hang va nhung ((cong dan) or (cong tac)) ((than cap) or (toan tap))*.