Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
vai cua » dai cua, hai cua, lai cua
xuc ban » duc ban, cuc ban, quoc ban
lam xuc » cam xuc, lam duoc
van lam » van nam
sach tu » sach thu, cach tu, sach ty
mang xa » lang xa, mang may, dang xay
xang xa » lang xa, ang xa, dang xay
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach tu ((xang xa) or (mang xa)) hoi. hieu van lam xuc ban thanh ((vai cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tu ((xang xa) OR (mang xa)) hoi. hieu van lam xuc ban thanh ((vai cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: so sach tu ((xang xa) or (mang xa)) hoi. hieu van lam xuc ban thanh ((vai cua) or (di cua)) tre*.