Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phuong hoang
chieu sach » chiet tach, chieu sang, chieu xanh
tranh luan » trinh luan, trinh luat, doanh luan
phung cong » nhung cong, phong cong, nhung chong
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - canh tranh luan ((phuong cong) OR (phung cong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - canh tranh luan ((phuong cong) OR (phung cong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chinh sach)) - canh tranh luan ((phuong cong) OR (phung cong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - canh tranh luan ((phuong cong) OR (phung cong)) manh toan ban*.