Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
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: te sach y nang ((xa hoi) OR (mai khoi)). hieu va cam xuc van hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((xa hoi) or (mai khoi)). hieu va cam xuc van hanh vi cua tre*.