Google strikes out the least common (and therefore most important) keywords in my queries. Google replaces specific jargon with common words that are similar i

Google strikes out the least common (and therefore most important) keywords in my queries. Google replaces specific jargon with common words that are similar in meaning to laymen. Google returns pages which do not contain any of the keywords that I've searched for at all. If you use your example and search for "hip replacement", or any "what are the signs" variation, you get all of the content free SEO spam farms specifically catered to returning useless garbage to medical queries, but no informational academic/government/ngo health sites. If Google's AI is catering to the GPT-3 and future GPT-X SEO adsense spam vendor market and Google is not curating a collection of high quality reference sites like librarians have been screaming at them to do for 20 years, then it is doomed. It is nearly completely broken now, and will become more broken every year going forward as the algorithm/counter-algorithm fight continues and human content drops off the index altogether.