Perhaps you should try some spelling variations:
thuat nhung » thuat hung, thuat chung, thuat chuong
thanh tung » thanh cong
tuan nhung » quan nhung, tuan hung, tranh nhung
hieu tinh » chieu tinh, lieu tinh, kieu tinh
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan
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 tung ((tuan nhung) OR (thuat nhung)) cong ((dan than) or (van than)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co hieu tinh - thanh tung ((tuan nhung) OR (thuat nhung)) cong ((dan than) OR (van than)) cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co hieu tinh - thanh tung ((tuan nhung) OR (thuat nhung)) cong ((dan than) or (van than)) cap*".