Perhaps you should try some spelling variations:
thanh luong » thanh huong, thanh long, thanh cuong
nhung cong » dung cong, thong cong, hang cong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
luong va » dung va
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
toan ban » van ban
co hieu » cao hieu, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co hieu tinh - thanh luong va nhung cong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co hieu tinh - thanh luong va nhung cong dan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: co hieu tinh - thanh luong va nhung cong dan ((toan cao) or (toan ban))*.