Perhaps you should try some spelling variations:
ban thanh » ban hang
cham duc » pham duc, cham soc, pham duy
ban hanh » ban hang
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
de cua » le cua, te cua, dieu cua
cua te » cua tu

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 ky lang xa hoi. lieu va cham duc ((ban thanh) or (ban hanh)) de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky lang xa hoi. lieu va cham duc ((ban thanh) OR (ban hanh)) de cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. lieu va cham duc ((ban thanh) or (ban hanh)) de cua te*.