how to create a dynamic like attached DATA APP link ?!

I want to create a DATA APP, that can filter a SharePoint list using some Keywords …

I need to understand “in steps” how can i refine the Stings to Texts and make a sensitive filter to lookup through fields using those Keywords !

i am thinking if i can have the same DATA APP like this one :-

Refresh Button Widget Example: Trigger DB Backend – KNIME Community Hub