Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
tam thuc » tham thuc, am thuc, nam thuc
thuc ban » thuoc ban, thuc dan, thu ban
thanh ly » thanh lay, thanh ky, thanh le
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hang xa » hoang xa, hang va, lang xa
hang ca » hang va, nang cao, hang tai
hieu ve » hieu va, hieu van
ve tam » ve tac, ve tai, va tam
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 ((hang xa) or (hang ca)) hoi. hieu ve tam thuc ban thanh ly cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((hang xa) OR (hang ca)) hoi. hieu ve tam thuc ban thanh ly cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((hang xa) or (hang ca)) hoi. hieu ve tam thuc ban thanh ly cua vat*.