Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
cong toan » cong tan, cong hoan, cong tuan
thanh cac » hanh cac, thanh ca, tranh cac
thanh bac » nhanh bac, thanh bai, thanh san
cap bang » cao bang, can bang, lap bang
cap hay » cap xay, cap han, cap giay

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 bang) OR (cap hay)) cong toan ((thanh cac) OR (thanh bac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung ((cap bang) or (cap hay)) cong toan ((thanh cac) OR (thanh bac))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung ((cap bang) or (cap hay)) cong toan ((thanh cac) OR (thanh bac))*.