Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
tranh va » tranh van, trang va, trinh va
tan doan » tran doan, van doan, toan doanh
tap doan » tap quan
va hang » van hang, va nang, va lang

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 hieu manh - hanh tranh va hang cong ((tan doan) OR (tap doan)) tap~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh tranh va hang cong ((tan doan) or (tap doan)) tap*.