Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh thanh » canh tranh, danh thanh, anh thanh
thanh hoat » thanh hoa, thanh hoai, thanh hoang
doi chieu » doc hieu, doi chi, mot chieu
dong cong » duong cong, dung cong, dang cong
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh thanh hoat dong cong dan van ban~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh thanh hoat dong cong dan van ban*.