Perhaps you should try some spelling variations:
ban hanh » ban hang
cau thuc » cau truc, cuu thuc, can thuc
thuc ban » thuoc ban, thuc dan, thu ban
cuu tre » cau tren, cau treo
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cua triet, dua tren
ky danh » ky anh, ky dang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ve » hieu va, hieu van
te sai » te tai, te bai, te lai
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ((ky lang) or (ky danh)) hoa hoi. hieu ve cau thuc ban hanh kem ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ((ky lang) OR (ky danh)) hoa hoi. hieu ve cau thuc ban hanh kem ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sai ((ky lang) or (ky danh)) hoa hoi. hieu ve cau thuc ban hanh kem ((cua tre) or (cuu tre))*.