Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
va hanh » van hanh, va thanh, va danh
tu ban » thu ban, te ban
ban ky » van ky, dan ky
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: tu ban ky nang x hoi. hieu ve ((((cam duc) OR (cao duc))) OR (cao su)) va hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: tu ban ky nang x hoi. hieu ve ((((cam duc) or (cao duc))) or (cao su)) va hanh vi cua te*.