Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
sach ty » sach y, sach tu, sach thu
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
ang xa » lang xa, mang xa, hoang xa
va cao » va cac, va co, va dao
va ca » va cac, va cai, va cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((ang xa) or (dang xay)) hoi. hieu ve cam xuc ban thanh ((va ca) or (va cao)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((ang xa) OR (dang xay)) hoi. hieu ve cam xuc ban thanh ((va ca) OR (va cao)) viet.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((ang xa) or (dang xay)) hoi. hieu ve cam xuc ban thanh ((va ca) or (va cao)) viet*.