Got it resolved.I can use the drag and drop feature when combining multiple audiences which helps me in creation of a container to add segment:2,3 and 4 into it and then I can combine that container with segment:1 using AND operator 

HI, I am facing an issue with combining multiple audiences in Adobe Target.I have one segment in audience Library say: 1 and I created an activity-only audience combining multiple segments say; 2, 3 and 4.Now, I want to create an audience which is 1 and (2 or 3 or 4).I am not able to combine 1 and (...