I am working on a portal that allows the users to view, download and share reusable assets. I am trying a add filter functionality to this portal with multiple filters groups. Check the following link for an example of the functionality that I am looking for.

http://www.smartprix.com/mobiles/android-os/price-5000_to_10000/samsung-brand?uq=1

Please note that similar to these filters, I am showing the asset count along with each filter. I have implemented the functionality to some extent but the problem I am facing is with multiple selections and updation of asset count.

For a moment, if we forget what I have implemented so far, can someone help me with the logic for the filter functionality as seen in the link I have shared above?

Any help would be appreciated. Thanks in advance.