Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
dung cong » dung trong
cong than » cong thanh, cong thang, cong tan
chan dan » chan doan, chan dang, nhan dan
van dung » van dong, xay dung, tin dung
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 khang - chan dan van dung cong than ((phan tu) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu khang - chan dan van dung cong than ((phan tu) OR (phan lap))*.