Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
hoc hieu » hoc thieu, hoc hien, doc hieu
cua hang » cua dang, cua nhung, cua cong
cong van » cong vang, cong san, cong va
cong tan » cong tac, cong san, cong thanh
song van » hoang van, trong van, duong van
ban ban » ban banh, van ban, can ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - canh tranh cua hang ((((cong van) or (cong tan))) or (song van)) ban ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh cua hang ((((cong van) OR (cong tan))) OR (song van)) ban ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh cua hang ((((cong van) or (cong tan))) or (song van)) ban ban*.