Perhaps you should try some spelling variations:
danh dai » danh dau, danh di, danh sai
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, loc va, doc va
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((o hoi) or (x ho)). hieu vu cham soc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((o hoi) OR (x ho)). hieu vu cham soc va danh dai cua tre*.