Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, nhanh hai, hang hai
van lao » van dao, van bao, van lam
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
tu ban » thu ban, te ban
ban ky » van ky, dan ky
luc va » tuc va
loc va » hoc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky nang x ho. hieu van lao ((((luc va) or (loc va))) or (duc va)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky nang x ho. hieu van lao ((((luc va) OR (loc va))) OR (duc va)) hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ban ky nang x ho. hieu van lao ((((luc va) or (loc va))) or (duc va)) hanh hai cua tre*.