All search engines have some form of implicit bias. An unbiased search engine would be beyond useless at actually finding anything but extremely well specified queries. The trick is to tune the bias to favor results that are interesting and relevant.
This is also why having just one big search engine is a bad idea.
At the very least though, I would expect my search engine to rank results higher, if they contained the words I was looking for, without having to wrap in +"..." every single word. This seems to be something, that few search engines are capable of. Is this very basic thing labeled as "advanced" now?
That's how most search algos work out of the box. Google used to work that way. I agree; it's getting worse. It's not obvious if this is being done purposely but the result is that Google is basically unusable for a lot of searches now.
Google's moved to vector search, which doesn't lend itself to keyword prioritization in the same way classic keyword search does. I think that's 90% of the problem.
Not bias, deliberate disappearance of specific categories of ideas. Independent blogs and forums not owned by large silicon valley companies have disappeared, for example. So have all discussions of current events, except for "mainstream" news publications.
Whether this is because of a short term greed motivation to maximize adsense yield or a larger conspiracy of global information control isn't clear yet. But it amounts to the same in practice.
This is also why having just one big search engine is a bad idea.