Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
van thanh » ban thanh, van tuan
trinh va » trinh van, trinh vat, trinh ve

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 trinh va nhung cong ((((van thanh) or (van ban))) or (hai phong)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh trinh va nhung cong ((((van thanh) OR (van ban))) OR (hai phong)) cac.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh trinh va nhung cong ((((van thanh) or (van ban))) or (hai phong)) cac*.