For more queries, you can add modifiers to a Google Search to get the results you want

Seeing folks mention the NOT operator (-). It's quite powerful! For example, you can do:

intext:"Powered by intercom" -site:intercom.com will find all the sites that use the Intercom widget

or ~blog bread baking -inurl:checkout -intext:checkout will find bread blogs (or similar) without commercial intent

I put together a list of the two dozen or so most useful templates of this, for folks who are interested: https://www.alec.fyi/dorking-how-to-find-anything-on-the-int...