Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
thanh van » thanh toan, thanh phan, thanh nhan
tang cua » mang cua, hang cua, tang luan
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chieu sach)) - hanh tang cua dang cong dan ((thanh van) OR (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sach)) - hanh tang cua dang cong dan ((thanh van) OR (thanh san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (chieu sach)) - hanh tang cua dang cong dan ((thanh van) OR (thanh san))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chieu sach)) - hanh tang cua dang cong dan ((thanh van) OR (thanh san))*.