Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
tung quang » tuong quang, dung quang, hung quang
quang dung » quang trung, ung dung, cuong dung
dung trung » dung trong, quang trung, dung ung
doi chieu » doc hieu, doi chi, mot chieu
thanh van » thanh toan, thanh phan, thanh nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh tung quang dung trung ((thanh van) or (thanh san)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung quang dung trung ((thanh van) OR (thanh san)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung quang dung trung ((thanh van) or (thanh san)) cau*.