Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, viet sach
hanh tang » hanh trang, anh tang, hanh mang
tang cua » mang cua, hang cua, tang luan
cua dang » cua cong, cua ban
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan tap » toan ban
te sach » toc sach

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: theo ((tieu sach) OR (te sach)) - hanh tang cua dang ((cong san) OR (cong tan)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) OR (te sach)) - hanh tang cua dang ((cong san) or (cong tan)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) OR (te sach)) - hanh tang cua dang ((cong san) or (cong tan)) toan tap*.