Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thuc ban » thuoc ban, thuc dan, thu ban
thanh de » hanh de, thanh ve, thanh do
mai hoi » mai khoi, dai hoi, lai hoi
hieu le » hieu ve, hieu he, hieu ly
cua tre » cua te, cuu tre, cua triet
tu cao » cu cao, tu cac, vu cao
ma hoi » xa hoi, ma hoa, me hoi
de cua » le cua, te cua, dieu cua
le am » le ham, le nam, le a

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: tu cao ky nang ((ma hoi) OR (mai hoi)). hieu le am thuc ban thanh de cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu cao ky nang ((ma hoi) or (mai hoi)). hieu le am thuc ban thanh de cua tre*.