Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh thanh » canh tranh, danh thanh, anh thanh
doi chieu » doc hieu, doi chi, ho chieu
thanh ha » thanh hoa, thanh hai, nhanh ha
ha thong » hoa thong, nha thong, he thong
cong dan » cong san, cong tan, cong dong

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 ha thong ((cong dan) or (huong dan)) thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh thanh ha thong ((cong dan) OR (huong dan)) thanh san*.