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