Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong thanh » dong thanh, cong trinh, truong thanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ban hang » ngan hang
cong tan » cong tac, cong san, cong ha
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 hang - hanh tranh cua nhung ((((cong tan) OR (cong thanh))) OR (cong ty)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ban hang - hanh tranh cua nhung ((((cong tan) OR (cong thanh))) or (cong ty)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ban hang - hanh tranh cua nhung ((((cong tan) OR (cong thanh))) or (cong ty)) toan ban*.