Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
trong lan » trong san, trong lam, trong tan
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh trong lan ((nhung cong) OR (thong cong)) ((dan than) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh trong lan ((nhung cong) OR (thong cong)) ((dan than) OR (van than)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh trong lan ((nhung cong) OR (thong cong)) ((dan than) or (van than)) cau*".