In 2021, the new way to do code search is to write your search terms and let Copilot fill in the rest of the code.
Copilot would actually be kind of cool if it automatically inserted comments linking to the original source of the snippets and automatically added the source project's copyright/license notices to your app's legal notices UI.
After all these years I still miss this, can't explain exactly why. Maybe it is the nostalgia of the 2006-2008 years when everything seemed still open and doable when it came to things on the web.