Perhaps you should try some spelling variations:
hanh vii » hanh voi, hanh va, hanh noi
cuu tre » cua tre, cau tren, cau treo
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
ky tang » ky nang, ky dang, kho tang
bai ky » ban ky, sai ky, bac ky
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
tu bai » tu ban, tu bat, te bai

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 va cam tuc va ((hanh vii) or (hanh vi)) 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 va cam tuc va ((hanh vii) OR (hanh vi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu bai ky tang ((mai hoi) or (lai hoi)). hieu va cam tuc va ((hanh vii) or (hanh vi)) cuu tre*.