Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
hieu tinh » chieu tinh, lieu tinh, kieu tinh
tung tuan » trung tuan, hung tuan, quang tuan
hang cong » dang cong, hang nong, bang cong
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 cong) OR (hang 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 cong) OR (hang 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 cong) OR (hang cong)) ((dan than) or (van than)) cap".
• Adding a wildcard symbol may retrieve word variants: co hieu tinh - thanh tung tuan ((nhung cong) OR (hang cong)) ((dan than) or (van than)) cap*.