Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
ban thanh » ban hanh, ban hang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
hoc ban » hoc bang, hoc dan, hoc bai

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 ban thanh - hanh tranh cua nhung ((cong tan) OR (cong ty)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc ban thanh - hanh tranh cua nhung ((cong tan) or (cong ty)) toan ban*.