Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
lam xuc » cam xuc, lam duoc
cua te » cua tu
y nang » ky nang, ly nang, v nang
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: thu sach y nang ma hoi. hieu van ((lam xuc) or (nam thuoc)) ban thanh vi ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu van ((lam xuc) OR (nam thuoc)) ban thanh vi ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu van ((lam xuc) or (nam thuoc)) ban thanh vi ((cuu tre) or (cua te))*.