Perhaps you should try some spelling variations:
thanh lay » thanh lap, thanh tay, thanh lam
ban thanh » ban hanh, ban hang
sach thu » sach thue, sach thieu, sach tham
thuc ban » thuoc ban, thuc dan, thu ban
tam thuc » tham thuc, am thuc, nam thuc
hieu ve » hieu va, hieu van
hang ca » hang va, nang cao, hang tai
sach ty » sach y, sach tu, xach tay
hang xa » hoang xa, hang va, lang xa
lay cua » ly cua, day cua, lai cua
ve tam » ve tac, ve tai, va tam

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 thu)) ((hang xa) or (hang ca)) hoi. hieu ve tam thuc ban thanh lay cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) ((hang xa) OR (hang ca)) hoi. hieu ve tam thuc ban thanh lay cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) ((hang xa) or (hang ca)) hoi. hieu ve tam thuc ban thanh lay cua vat*.