Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va
xuc va » duc va, tuc va, luc va
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, ma hoa, me hoi

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 tang ((ma hoi) or (xa hoi)). ((hieu ve) or (hieu van)) cam xuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ((ma hoi) OR (xa hoi)). ((hieu ve) OR (hieu van)) cam xuc va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang ((ma hoi) or (xa hoi)). ((hieu ve) or (hieu van)) cam xuc va hanh vai cua tre*.