There are Google search operators that allow you to perform a Google.com search only on craigslist.org. You need to include “site:craigslist.org” in your search query. This tells Google to only search Craigslist and no other website. Here is an examples search for all Craigslist below.
site:craigslist.org skid loader grapple attachment
Note that this will include all of the Craigslist city websites because they are subdomains of the main domain. Check out the example in the image below.