Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
cuu tre » cau tren, cau treo
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu van
cua tre » cua te, cua triet, dua tren
hieu va » lieu va, hieu qua
ky sang » ky nang, ky dang, ky tang
tu cao » cu cao, tu cac, vu cao
thu va » thuc va, thue va, tu va

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 cao ky sang ma hoa. ((hieu ve) OR (hieu va)) nam thu va thanh vi ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cao ky sang ma hoa. ((hieu ve) or (hieu va)) nam thu va thanh vi ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: tu cao ky sang ma hoa. ((hieu ve) or (hieu va)) nam thu va thanh vi ((cua tre) OR (cuu tre))*.