Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
van thanh » ban thanh, van tuan
tang cua » mang cua, hang cua, tang luan
cua dang » cua cong, cua ban
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu sang)) - hanh tang cua dang cong ((van thanh) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - hanh tang cua dang cong ((van thanh) OR (dan than)) cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - hanh tang cua dang cong ((van thanh) or (dan than)) cao*.