Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
thieu sang » chieu sang, thieu khang, thieu quang
doanh luan » doanh nhan
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
phan dau » phan tu, hang dau
phan van » pham van, thanh van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - chinh doanh luan dung cong tan ((phan dau) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - chinh doanh luan dung cong tan ((phan dau) OR (phan van))*.