Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
nam thuc » nam thuoc, am thuc, nam thu
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 khach y nang x hoi. ((hieu ve) OR (hieu va)) nam thuc ((va hanh) OR (va danh)) vi cua te~.
• Adding a wildcard symbol may retrieve word variants: vu khach y nang x hoi. ((hieu ve) or (hieu va)) nam thuc ((va hanh) or (va danh)) vi cua te*.