Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » hanh trinh, hanh trang, lanh tranh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
san toan » van toan, dan toan, xuan toan

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 - ((hanh tranh) OR (canh tranh)) cua nhung cong ((san toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh tranh) OR (canh tranh)) cua nhung cong ((san toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((hanh tranh) OR (canh tranh)) cua nhung cong ((san toan) or (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((hanh tranh) OR (canh tranh)) cua nhung cong ((san toan) or (manh toan)) cau*.