Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung qua » trung quan, trung cua, truong quan
trong qua » trong quan, thong qua, trong nha
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu sach - thanh ((trung qua) OR (trong qua)) nhung ((cong dan) OR (cong san)) phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung qua) OR (trong qua)) nhung ((cong dan) or (cong san)) phan cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung qua) OR (trong qua)) nhung ((cong dan) or (cong san)) phan cau*.