Perhaps you should try some spelling variations:
ban thanh » ban hang
ban hanh » ban hang
co sach » bo sach, cuon sach, hoc sach
va tham » van tham, va thanh, va thuat
sach ky » sac ky, sach y, sach ty
va cham » va chat
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
di cua » dai cua, doi cua, de 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: co sach ky lang xa hoi. lieu ((va cham) OR (va tham)) xuc ((ban thanh) or (ban hanh)) di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky lang xa hoi. lieu ((va cham) OR (va tham)) xuc ((ban thanh) OR (ban hanh)) di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky lang xa hoi. lieu ((va cham) OR (va tham)) xuc ((ban thanh) or (ban hanh)) di cua tu".
• Adding a wildcard symbol may retrieve word variants: co sach ky lang xa hoi. lieu ((va cham) OR (va tham)) xuc ((ban thanh) or (ban hanh)) di cua tu*.