Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
thong cap » thong cac, trung cap, thong cua
tung cap » trung cap, cung cap, trong cap
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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 - thanh ((tung cap) OR (thong cap)) ban ((cong dan) OR (cong san)) phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((tung cap) OR (thong cap)) ban ((cong dan) or (cong san)) phan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((tung cap) OR (thong cap)) ban ((cong dan) or (cong san)) phan cau*.