Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
ban banh » ban hanh, ban danh, ban thanh
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
ban anh » ban hanh, ban danh, bang anh
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho
d cua » de cua, do cua, da cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang x hoi. hieu va tham thuc ((ban banh) or (ban anh)) d cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x hoi. hieu va tham thuc ((ban banh) OR (ban anh)) d cua tre*.