If a customer has pages upon pages of websites/databases, it can be very difficult to search through them for a certain site.
Here is how you can adjust the settings of how many results show per page on the customer's dashboard.
Append to the end of the URL "?per_page=xxx" substituting the number of sites per page for the x's.
Do not give this information to customers though because it might cause performance issues making for a poor customer experience.
You can suggest customer append "?search=<sitename>" to the URL, and they can search for a site within their dashboard.