Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan cao » toan cao, juan cao, quang cao
va cong » tai cong, cua cong

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 trung ((va cong) or (va thuong)) cong san tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung ((va cong) OR (va thuong)) cong san tuan cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung ((va cong) or (va thuong)) cong san tuan cao*.