Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
thanh le » thinh le, thanh ve, thanh de
te sach » toc sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cham tu » pham tu, cam tu, chai tu
ha hoi » hoa hoi, xa hoi, va hoi
tu ban » thu ban, te ban
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: te sach tay lang ((ha hoi) or (ha noi)). hieu ve cham tu ban thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tay lang ((ha hoi) OR (ha noi)). hieu ve cham tu ban thanh le cua vat*.