Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
chung cong » nhung cong, chong cong, phung cong
hoc thieu » toc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan hang » tan khang, ban hang, van hang
hang cau » hang dau, hang ca, nhung cau
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu quang - thanh ((tran van) or (luan van)) chung cong tan hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - thanh ((tran van) OR (luan van)) chung cong tan hang cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - thanh ((tran van) or (luan van)) chung cong tan hang cau*.