Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh tran » thanh trang, thanh toan, thanh tra
tuan duong » tuyen duong, tuong duong, van duong
hoc thieu » toc thieu, hoc hien
tan dung » tran dung, tin dung, van dung
tan toan » tap toan, van toan, dan toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - thanh tran ((tan dung) or (tuan duong)) cong ((tan toan) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tran ((tan dung) OR (tuan duong)) cong ((tan toan) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh tran ((tan dung) or (tuan duong)) cong ((tan toan) or (tan tran)) cau*.