Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
thanh chau » thanh cha, thanh cham, thanh chu
doi chieu » doc hieu, doi chi, ho chieu
tuong va » truong va, thuong va, luong va
cong san » cong tac
phan cau » phan dau, phan cac, phan tu
tung va » trung va, dung va, vung va

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 - thanh ((tung va) OR (tuong va)) nhung cong san ((thanh chau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((tung va) OR (tuong va)) nhung cong san ((thanh chau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((tung va) OR (tuong va)) nhung cong san ((thanh chau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((tung va) OR (tuong va)) nhung cong san ((thanh chau) or (phan cau))*.