Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
san than » sang than, san thanh, ban than
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 chieu sach - khanh phong ((cua dung) or (cua dong)) cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - khanh phong ((cua dung) OR (cua dong)) cong san than cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - khanh phong ((cua dung) or (cua dong)) cong san than cau*.