Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua khong » hua khong, cua phuong, cua thuong
cong san » cong tac
chinh ca » chinh ta, chinh va, chinh tai

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 - canh tranh cua khong ((cong san) or (cong thanh)) chinh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh cua khong ((cong san) OR (cong thanh)) chinh ca.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh cua khong ((cong san) or (cong thanh)) chinh ca*.