Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
van phuong » van phong, van chuong, van phung
hieu manh » chieu xanh, hieu nganh, dieu hanh
va phuong » va thuong, cac phuong
dung toan » dung doanh, dung thang, dung thanh
toan ban » van ban
ban tu » van tu

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: ho ((hieu manh) OR (chieu sach)) - canh tranh ((van phuong) OR (va phuong)) dung toan ban tu~.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - canh tranh ((van phuong) or (va phuong)) dung toan ban tu*.