Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh hinh » hanh chinh, hanh tinh, hanh dinh
huu khang » huu han, huu hanh
hinh huu » dinh huu, hinh luu, tinh huu
cong san » cong tac
toan cao » toan ban
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh hinh huu khang ((cong san) OR (cong ty)) ((toan cao) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh hinh huu khang ((cong san) or (cong ty)) ((toan cao) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh hinh huu khang ((cong san) or (cong ty)) ((toan cao) OR (toan tap))*.