Thank you for the reply @dpoggemann
I am able to filter these fields individually. I am not able to search the records based on the data stored in these field.
I also added a custom field in account entity, but that field is also not searchable.
I found the solution, i have to add the fields in quick find view.
But in some of the blogs, its mentioned that all the fields added to the view are searchable.
We have to add fields to quick find view only if we are using "quick find search" and not for "search this view".
Its confusing, I don't know what to do?