If you add in PPM odata in the search string, all odata information available comes up by default, but you can add keywords in based on errors you are seeing, or change filter by content type to documentation to just see what documentation is available: https://support.broadcom.com/home-search-results.html?q=ppm%20odata
Additional Information
See KB: 141061 for tips on how to optimize use of Self Service for Clarity PPM