Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
hieu vu » hieu va, hieu ve, hieu su
ky mang » ky nang, ke mang, ky dang
lai hoi » lai hoa, lai roi, mai hoi
dai hoi » dai hoc, dai hai, dai moi
vu chat » va chat, ve chat, du chat
luc va » duc va, tuc va, loc va
tu san » thu san, tu ban, tu can
xuc va » duc va, tuc va, xac va
san ky » sang ky, van ky, dan ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky mang ((lai hoi) or (dai hoi)). hieu vu chat ((xuc va) or (luc va)) hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky mang ((lai hoi) OR (dai hoi)). hieu vu chat ((xuc va) OR (luc va)) hanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: tu san ky mang ((lai hoi) or (dai hoi)). hieu vu chat ((xuc va) or (luc va)) hanh dai cua te*.