Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cam thuc » am thuc, nam thuc, cam thu
va thanh » gia thanh, ban thanh, va tinh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ve cam » ve cham, ve cac, va cam
cam ky » cao ky, cac ky
tu cam » tu cham, tu cac, tu nam

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 cam ky ((nang ma) OR (mang may)) hoi. hieu ve cam thuc va thanh vai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cam ky ((nang ma) or (mang may)) hoi. hieu ve cam thuc va thanh vai ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: tu cam ky ((nang ma) or (mang may)) hoi. hieu ve cam thuc va thanh vai ((cua tre) OR (cuu tre))*.