Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
ban hang » ngan hang
thuc ban » thuoc ban, thuc dan, thu ban
hang di » hang doi, hang vi, hang dien
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
cuu tre » cua tre, cau tren, cau treo
ve lam » va lam, de lam, se lam
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: tu sach ((ky lang) or (ky tang)) xa hoi. hieu ve lam thuc ban hang di ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky tang)) xa hoi. hieu ve lam thuc ban hang di ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) or (ky tang)) xa hoi. hieu ve lam thuc ban hang di ((cua te) or (cuu tre))*.