Perhaps you should try some spelling variations:
ban thanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
ban hanh » ban hang
so sach » so sanh, co sach, hoc sach
va chat » van chat, va phat, cao chat
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
bo sach » co sach, hoc sach
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: ((so sach) or (bo sach)) ky lang xa hoi. lieu va chat xuc ((ban thanh) or (ban hanh)) di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky lang xa hoi. lieu va chat xuc ((ban thanh) OR (ban hanh)) di cua tu.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (bo sach)) ky lang xa hoi. lieu va chat xuc ((ban thanh) or (ban hanh)) di cua tu*.