The simplest way to add search capabilities would be to using the Continuous Scroll Page format, HTML text rending, and use the CMD+F/Ctrl+F search capabilities of the browser.
Alternatively, you can add your own search capability by extending your output: Extending Functionality with External Resources
I would recommend using a JQuery plugin to save time. You could search all nodes, then look for the parent page (e.g., parents('.page') in jQuery) and if clicked, navigate to that page using the nav.to() function.
However, the first solution above is much simpler.