Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
hieu ve » hieu va, hieu van
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
ve nam » he nam, va nam, le nam
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach y nang x hoi. hieu ve nam thuc ((va hanh) or (va thanh)) vi ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach y nang x hoi. hieu ve nam thuc ((va hanh) OR (va thanh)) vi ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: vu khach y nang x hoi. hieu ve nam thuc ((va hanh) or (va thanh)) vi ((cua tre) or (su triet))*.