Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
te tang » te trang, le tang, de tang
va hanh » van hanh, va thanh, va danh
tang ky » dang ky, trong ky, tang khu
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te tang ky nang ((x hoi) or (o hoi)). hieu ((ve cham) or (va cam)) luc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te tang ky nang ((x hoi) OR (o hoi)). hieu ((ve cham) OR (va cam)) luc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te tang ky nang ((x hoi) or (o hoi)). hieu ((ve cham) or (va cam)) luc va hanh dai cua tre*.