Perhaps you should try some spelling variations:
nhung vuong » hung vuong, nhung huong, nhung tuong
canh doanh » hanh doanh, chinh doanh, doanh doanh
hien sach » dien sach, kien sach, thien hach
doanh cua » doanh luan
cua nhung » va nhung
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - canh doanh cua nhung vuong ((dan toan) OR (van toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - canh doanh cua nhung vuong ((dan toan) or (van toan)) cau*.