Perhaps you should try some spelling variations:
thuat bai » thuat bao, thuyet bai, thuat xay
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
ly nang » ky nang, ly hang, ly quang
ly vang » ly hang, ly quang
ly van » le van, ly va, ly von
va cau » van cau, va cac, va dau
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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: thuat bai ((ly nang) OR (((ly vang) OR (ly van)))) x hoi. hieu va cau truc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat bai ((ly nang) or (((ly vang) OR (ly van)))) x hoi. hieu va cau truc va hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: thuat bai ((ly nang) or (((ly vang) OR (ly van)))) x hoi. hieu va cau truc va hanh vi cua tre*.