Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
dan danh » van danh, ban danh, dai danh
han danh » van danh, phan dang, nhan dang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
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: te sach ky nang ma hoi. hieu ve cham thuc ((dan danh) OR (han danh)) dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu ve cham thuc ((dan danh) OR (han danh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ve cham thuc ((dan danh) OR (han danh)) dai cua tre*.