Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
hanh van » thanh van, khanh van, hanh va
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh cac

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) or (nhieu tang)) - ((hanh van) or (tinh toan)) quan dung cong van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - ((hanh van) OR (tinh toan)) quan dung cong van than cap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - ((hanh van) or (tinh toan)) quan dung cong van than cap*.