Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thanh doi » thanh loi, thanh moi, thanh do
ban thanh » ban hanh, ban hang
thuoc ban » thuoc tan, thuoc dang, thu ban
lieu van » lieu va, hieu van, sieu van
hoc sach » hoc sinh, hoc cac, hoc anh
cua tre » cuu tre, cua triet, dua tren
toc sac » toc sach, toc san, doc sach
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sac) or (hoc sach)) ky nang ma hoi. lieu van nam thuoc ban thanh doi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sac) OR (hoc sach)) ky nang ma hoi. lieu van nam thuoc ban thanh doi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((toc sac) or (hoc sach)) ky nang ma hoi. lieu van nam thuoc ban thanh doi ((cua tre) or (cua te))*.