Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
thu san » thuy san, thu ban, phu san
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac loc » cac lop, cac toc, cac hoc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
ma hoi » mai hoi, xa hoi, me hoi
loc va » hoc va, luc va
tu ban » thu ban, te ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu san) OR (tu ban)) ky tang ((ma hoi) OR (ma hoa)). hieu va cac loc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu san) or (tu ban)) ky tang ((ma hoi) OR (ma hoa)). hieu va cac loc va hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((thu san) or (tu ban)) ky tang ((ma hoi) OR (ma hoa)). hieu va cac loc va hanh vai cua tre*.