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
cua dang » cua cong
doan ban » doanh ban, toan ban, doan van
cong le » cuong le, cong li, hong le
le doan » le dan, ly doanh, le hoang

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 ((cua dang) or (cua ban)) cong le doan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung ((cua dang) OR (cua ban)) cong le doan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung ((cua dang) or (cua ban)) cong le doan ban*.