Trending @Accenture; Already resigned, how to search new job?

Hi, I have already resigned few days ago from Accenture and am serving notice period now.

I do have one offer in hand. I was getting interview calls during july end.

But now after resigning it’s been almost 20 days and I am not getting any hr response. No new interview call. I am worried. Can someone pls help me how do I search for new opportunities?