@Samkupar
It's a bit non-intuitive at first. When you search, unless you're searching for a full user name (like mine, @jump_spider@goto.org), you can only search for what your instances *knows* about. So if you're looking for a particular hashtag or someone, and your instance hasn't federated with any toots that have it, then it won't appear. When searching a full username though, which includes the instance domain, the search knows to try to federate directly with that instance.
@mastodon