Filter Query Problem

Question

Name	Code
A	1001
B	1002
C	1001,1002
D	1001,1002,1003

when i serach 1001 only display A

when i search 1002 only display B

when I search 1001,1002 display A,B,C

when i search 1001,1002,1003 display A,B,C D

I want solution(query) for this problem.