I've been conducting searches on more than one word, and noticed that I was getting a lot of results which seem to only match the first word (e.g. a search for "foo bar baz" brings results matching "foo" but not "bar" and "baz"). I also noticed that these bogus results are mostly coming from Morpheus servents. Is this a known problem? Is it intentional?

Morpheus 4.0 provides early access to the new NEOnet technology, developed to make it easier to find content with 100 percent accuracy, this is why you see these types of results with Morpheus.

What is Neo Network and DHT?
A Distributed Hash Table (DHT) is an advanced form of peer-to-peer search that has no horizon. If all available content on the network is visible to all users, even if there is only a single copy.