Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
tuan duong » tuyen duong, tuong duong, van duong
hieu lang » hieu quang, nhieu tang, hieu van
tan dung » tran dung, tin dung, van dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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) or (hieu lang)) - thanh tung ((tan dung) or (tuan duong)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh tung ((tan dung) OR (tuan duong)) cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - thanh tung ((tan dung) or (tuan duong)) cong tac toan cao*.