Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thinh dan » thinh doan, trinh dan, hinh dan
dung cong » dung trong
van dung » van dong, xay dung, tin dung
cong tac » cong ty
phan lap » phan dau
dan van » dang van, doan van, dao 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 - thinh dan van dung cong tac ((phan tu) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thinh dan van dung cong tac ((phan tu) OR (phan lap))*.