Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
vu cao » cu cao, va cao
ma hoi » mai hoi, xa hoi, me hoi
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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 cao ky nang ((ma hoi) OR (ma hoa)). hieu va cam xuc va hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: vu cao ky nang ((ma hoi) or (ma hoa)). hieu va cam xuc va hanh vi cua tre*.