Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
thuc van » thuc vat, thuc dan, thuc va
vu sach » vu bach, su sach, vu khach
va nang » van nang, da nang, cam nang
hieu ve » hieu van
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 sach ((ky nang) OR (va nang)) x ho. ((hieu ve) OR (hieu va)) nam thuc van thanh vi cua tu~.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky nang) or (va nang)) x ho. ((hieu ve) or (hieu va)) nam thuc van thanh vi cua tu*.