A couple of thoughts.
I've noticed that when I repeat a Search, I get different items each time. Not entirely different, just a different mix.
I suspect that the algorithm is set to assume that if you didn't like (buy/view/watch) the first batch, it will show you a different batch. EBay has billions of listings after all.
Your Google search that turns up (active?) eBay listings is proof that the much maligned Item Specifics are working.
We were told they were designed to attract SEO's and well basically Google.
The problem may be that humans will describe the same thing different ways. Remember the parable of the six blind men and the elephant?.
But the Item Specifics force sellers to be very precise about their products.
I laugh that Books have three Required IS-- author ,title and language. But that those are Required leads me to think that some sellers are not mentioning the author or title of the book they are trying to sell. And yes some people are that dim.
