Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
tam thuc » tham thuc, am thuc, nam thuc
thuc ban » thuoc ban, thuc dan, thu ban
thanh de » hanh de, thanh ve, thanh do
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
va tam » van tam, va tham, va tac
de cua » le cua, te cua, dieu cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thuat sach)) ky nang ma hoi. hieu va tam thuc ban thanh de cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thuat sach)) ky nang ma hoi. hieu va tam thuc ban thanh de cua tu.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thuat sach)) ky nang ma hoi. hieu va tam thuc ban thanh de cua tu*.