Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
thuc ban » thuoc ban, thuc dan, thu ban
ban hang » ngan hang
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu va, hieu van
ve nham » ve nha, ve cham
vu cao » cu cao, va cao
va cua » va chua, via cua, ca cua
va chu » va che, va cau, va chi

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: vu cao ky nang ((mai hoi) OR (lai hoi)). hieu ve nham thuc ban hang ((va cua) OR (va chu)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu cao ky nang ((mai hoi) OR (lai hoi)). hieu ve nham thuc ban hang ((va cua) or (va chu)) tre~".
• Adding a wildcard symbol may retrieve word variants: vu cao ky nang ((mai hoi) OR (lai hoi)). hieu ve nham thuc ban hang ((va cua) or (va chu)) tre*.