Perhaps you should try some spelling variations:
thanh tung » thanh cong
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
cong sang » cong san, cong lang, cong vang
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac
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 trung) or (thanh tung)) quan nhung cong sang ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co hieu tinh - ((thanh trung) OR (thanh tung)) quan nhung cong sang ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "co hieu tinh - ((thanh trung) or (thanh tung)) quan nhung cong sang ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: co hieu tinh - ((thanh trung) or (thanh tung)) quan nhung cong sang ((than cap) OR (khan cap))*.