Perhaps you should try some spelling variations:
ban thanh » ban hang
vu khanh » vu thanh, van khanh, duy khanh
thu sach » tu sach, thuat sach, thuoc sach
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khanh) or (thu sach)) ky nang x hoi. lieu va am thuc ((ban thanh) or (ban hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khanh) OR (thu sach)) ky nang x hoi. lieu va am thuc ((ban thanh) OR (ban hanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu khanh) or (thu sach)) ky nang x hoi. lieu va am thuc ((ban thanh) or (ban hanh)) vi cua tre*.