Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
tung quang » tuong quang, dung quang, hung quang
quang dung » quang trung, ung dung, cuong dung
doi chiet » doi chieu, doi chi, doi viet
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
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: doi chiet tach - thanh tung quang dung ((cong dan) or (cong tac)) ((than cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - thanh tung quang dung ((cong dan) OR (cong tac)) ((than cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - thanh tung quang dung ((cong dan) or (cong tac)) ((than cau) or (phan tu))*.