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

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