Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thu » sach thue, sach thieu, sach tham
cham tuc » nham thuc, pham thuc, tham thuc
thanh le » thinh le, thanh ve, thanh de
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tuc ban » thuc ban, truc ban, tu ban
va hoc » van hoc
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) or (sach thu)) hang va hoc. hieu ve cham tuc ban thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) hang va hoc. hieu ve cham tuc ban thanh le cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) hang va hoc. hieu ve cham tuc ban thanh le cua vat*.