Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
tuan dang » tuan bang, tuan dung, tuan duong
tran dang » tran quang, tran hoang, tranh hang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh tung ((tuan dang) or (tran dang)) cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh tung ((tuan dang) OR (tran dang)) cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh tung ((tuan dang) or (tran dang)) cong tac than cau*.