Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nam thuc » nam thuoc, am thuc, nam thu
thanh le » thinh le, thanh ve, thanh de
khoa hoi » khoan hoi, khoa hoc, khoa doi
tu sach » thu sach, su sach, te sach
ty lang » tay lang, ty xang, ty hang
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cam tu » cam thu, nam tu, dam tu
ha hoi » hoa hoi, ha noi, xa hoi
le cua » ly 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 lang ((ha hoi) or (khoa hoi)). hieu ve ((cam tu) or (nam thuc)) ban thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang ((ha hoi) OR (khoa hoi)). hieu ve ((cam tu) OR (nam thuc)) ban thanh le cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang ((ha hoi) or (khoa hoi)). hieu ve ((cam tu) or (nam thuc)) ban thanh le cua vat*.