Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
truong va » truong dai, truong cao, truong dao
thanh cau » thanh chau, thanh mau, nhanh cau
trung va » trang va, trung ha, trung tam
cong van » cong vang, song van, cong tan
cong san » cong tac

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 ((trung va) OR (truong va)) nhung ((cong van) OR (cong san)) thanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung va) OR (truong va)) nhung ((cong van) or (cong san)) thanh cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung va) OR (truong va)) nhung ((cong van) or (cong san)) thanh cau*.