Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, va nhung, van hung
toan phan » thanh phan, toan ban, hoa phan
tran van » luan van
dan chan » dan gian, dan ca, van chat

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 tran van nhung cong ((dan chan) or (toan phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tran van nhung cong ((dan chan) OR (toan phan)) tu.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tran van nhung cong ((dan chan) or (toan phan)) tu*.