Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, thanh san
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
va lam » van lam, va lap
ban ky » van ky, dan ky
xuc va » tuc va, luc va, xac va
ma hoi » mai hoi, xa hoi, ma hoa
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: tu ban ky tang ma hoi. hieu va lam ((xuc va) OR (duc va)) ((thanh tai) OR (doanh tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky tang ma hoi. hieu va lam ((xuc va) or (duc va)) ((thanh tai) OR (doanh tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ban ky tang ma hoi. hieu va lam ((xuc va) or (duc va)) ((thanh tai) OR (doanh tai)) cua tre*.