Perhaps you should try some spelling variations:
cham vuc » cham soc, pham duc, cham cuu
cua tre » cua te, cuu tre, cua triet
hanh di » hanh de, hang di, danh di
vuc van » duc van, luc van, thuc van
va cham » va chat, va tham
hieu va » lieu va, hieu qua
so sanh » do sanh
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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 cac) OR (so sanh)) ky nang o hoi. hieu va cham vuc van ((hanh di) OR (hanh vi)) cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (so sanh)) ky nang o hoi. hieu va cham vuc van ((hanh di) or (hanh vi)) cua tre*.