Search engines want to steer you back onto a profitable path. Google shows you only what the crowd has decided to show you. PageRank by definition shows the most popular stuff, not the best or most important. One then has to find different vectors to the destination.

But to find truly unique, esoteric knowledge requires being the mind of the producer, then one can route around the thought terminating search engine algorithms. A search engine is only the first 10% or so of the journey.