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
duc thanh » duc thang, duc tan, de thanh
thanh van » thanh san, thanh toan, thanh phan
dan dung » van dung, tin dung, ap dung
cong duc » cong suc, hong duc, cong dac

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