Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
thieu sang » chieu sang, thieu khang, thieu quang
doanh qua » doanh quan, doanh cua, danh qua
dung cong » dung trong
cong than » cong thanh, cong thang, cong tan
qua dung » quang dung, su dung, qua song
phan lap » phan dau

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 qua dung cong than ((phan tu) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - chinh doanh qua dung cong than ((phan tu) OR (phan lap))*.