Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
thanh vai » thanh hai, thanh van, thanh tai
dan thanh » dang thanh, danh thanh, ban thanh
cac thuc » cac thu, can thuc, cay thuc
cua tre » cua te, cuu tre, cua triet
nang ma » sang ma, nang cao, mang may
vai cua » dai cua, hai cua, lai cua
tang ma » mang may, tang van
hieu ve » hieu va, hieu van
tu nam » su nam
nam ky » cam ky, nam ly

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