Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
chieu sach » chinh sach, chiet tach, chieu sang
phong cong » phong chong, thong cong, chong cong
doi chieu » doc hieu, doi chi, ho chieu
tranh va » tranh van, trang va, trinh va
van chat » cao chat
chat cam » chat cao, thuat cam, chat va

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 tranh va ((nhung chong) or (phong cong)) van chat cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh va ((nhung chong) OR (phong cong)) van chat cam*.