Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
thanh ve » hanh ve, thanh va, thanh vien
thuc ban » thuoc ban, thuc dan, thu ban
cuu tre » cua tre, cau tren
so sach » so sanh, bo sach, co sach
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
te sach » toc sach
vu cham » va cham, vu kham, tu cham
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (te sach)) ky nang ma hoi. hieu vu cham thuc ban thanh ve ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (te sach)) ky nang ma hoi. hieu vu cham thuc ban thanh ve ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (te sach)) ky nang ma hoi. hieu vu cham thuc ban thanh ve ((cuu tre) OR (cau treo))*".