Perhaps you should try some spelling variations:
ban hang » ngan hang
lang van » dang van, hoang van, giang van
tang van » dang van, hoang van, trong van
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
dau duc » dao duc, dang duc, dau nuoc
van dau » van dao, phan dau
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va cua » va chua, via cua, ca cua
cua tu » cua tuc, cua su, cua cu

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 ky ((nang xa) or (((lang van) or (tang van)))) hoi. hieu van dau duc ban hang va cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (((lang van) OR (tang van)))) hoi. hieu van dau duc ban hang va cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (((lang van) or (tang van)))) hoi. hieu van dau duc ban hang va cua tu*.