Perhaps you should try some spelling variations:
ban thanh » ban hanh
nam thuc » nam thuoc, am thuc, nam thu
ban hang » ngan hang
sach ty » sach tu, sach thu, xach tay
lang ha » long ha
hieu ve » hieu va, hieu van
ve nam » he nam, va nam, le nam
ly cua » le cua

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 ty) or (sach y)) lang ha noi. hieu ve nam thuc ((ban thanh) or (ban hang)) ly cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) lang ha noi. hieu ve nam thuc ((ban thanh) OR (ban hang)) ly cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) lang ha noi. hieu ve nam thuc ((ban thanh) or (ban hang)) ly cua vat*.