Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
tran dung » tran dang, tran hung, tran quang
thanh van » thanh san, thanh toan, thanh phan
tan dung » tin dung, van dung, dan dung
de thanh » le thanh
cong de » cong da, cong ve, cong dieu

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 - thanh trung ((tan dung) or (tran dung)) cong de thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thanh trung ((tan dung) OR (tran dung)) cong de thanh van*.