CNBC shared this from a Google all-hands this month: One tool to try and help with that is Google’s new Perspectives feed that’s designed to show results from humans. But now that many of the protesting subreddits have opened up, the Reddit trick isn’t as nerfed as it used to be.
All search engines do this. You can append or prepend site:<domain name>.<tld> and it will filter by site.
They even do wildcards, so to search any lemmy instance with “lemmy” in the domain name, you could do site:lemmy.*
To include others, you can us an OR operator.
So to include kbin.social you could use the following filter: site:lemmy.* OR site:kbin.social
Unfortunately, this won’t work for instances that don’t have lemmy in the name.