Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
hanh vai » hanh vi, hanh va, hanh tai
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
vo nang » voi nang, va nang, ho nang
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
san vo » san co, san va, san ho
xuc va » duc va, tuc va, luc va
loc va » hoc va, luc va
x hoi » o 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: thuat san vo nang ((x hoi) or (xa hoi)). hieu va tham ((xuc va) or (loc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san vo nang ((x hoi) OR (xa hoi)). hieu va tham ((xuc va) OR (loc va)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat san vo nang ((x hoi) or (xa hoi)). hieu va tham ((xuc va) or (loc va)) hanh vai cua tre*.