Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chau tinh » cuu tinh, ha tinh, cua tinh
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
tang cua » mang cua, hang cua, tang luan
cua dang » cua cong, cua ban
cong san » cong tac

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chau tinh) OR (chieu sach)) - hanh tang cua dang cong san ((toan ban) OR (van ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chau tinh) OR (chieu sach)) - hanh tang cua dang cong san ((toan ban) OR (van ban))*.