Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
cua tre » cua te, cuu tre, cua triet
hanh va » hang va, hanh vi
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
lai roi » lai hoi, loi roi
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang ((dai hoi) or (lai roi)). hieu ve cam xuc va ((hanh vai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang ((dai hoi) OR (lai roi)). hieu ve cam xuc va ((hanh vai) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang ((dai hoi) or (lai roi)). hieu ve cam xuc va ((hanh vai) or (hanh va)) cua tre*.