Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
van lam » van nam
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
tu san » thu san, tu ban, tu can

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: tu san ((ky lang) OR (ky tang)) xa hoi. hieu van lam ((xuc va) OR (tuc va)) thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ((ky lang) OR (ky tang)) xa hoi. hieu van lam ((xuc va) or (tuc va)) thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu san ((ky lang) OR (ky tang)) xa hoi. hieu van lam ((xuc va) or (tuc va)) thanh vi cua tre*.