Comment by DanielDent

There are still a lot of results with leaked data in Google's Cache and they are pretty easy to find..

Some possible queries: "CF-Int-Brand-ID", nginx-cache "Certisign Certificadora Digital",

Once you find one, you can look through the results for unusual strings/headers which you can use to find more results.

Many results have clearly been removed from Google's cache, but.. many also have not.