Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh than » hanh han, hanh nhan, hanh phan
than cua » nhan cua, thai cua, ban cua
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van 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 than cua tong ((cong tan) OR (cong san)) ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh than cua tong ((cong tan) OR (cong san)) ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh than cua tong ((cong tan) OR (cong san)) ((toan cau) or (toan ban))*.