Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
cuu tre » cua tre, cau tren, cau treo
ky tang » ky nang, ky dang, kho tang
mai hoi » mai khoi, dai hoi, mai doi
hanh va » hang va, hanh vi
lai hoi » dai hoi, lai hoa, lai roi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
tu bai » tu ban, tu bat, te bai
xuc va » duc va, tuc va, luc va
bai ky » ban ky, sai ky, bac ky
ve cac » va cac, vien cac

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

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