Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
van hang » van khang, van hoang, van thang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nhieu tang) or (hieu lang)) - thanh cong van hang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (hieu lang)) - thanh cong van hang cong dan toan ban*.