Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
thieu sang » chieu sang, thieu khang, thieu quang
doanh lan » doanh luan, doanh ban, doanh van
dung cong » dung trong
cong than » cong thanh, cong thang, cong tan
lan dung » van dung, dan dung, lan hung
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 lan dung cong than ((phan tu) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - chinh doanh lan dung cong than ((phan tu) OR (phan van))*.