Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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 cua ((nhung cong) or (hang cong)) ((van toan) OR (van tan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh cua ((nhung cong) OR (hang cong)) ((van toan) OR (van tan)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh tranh cua ((nhung cong) or (hang cong)) ((van toan) OR (van tan)) tap*".