I find Google less and less useful these days. My search terms often get turned into something else for no reason. If I search for any less common word, there'

I find Google less and less useful these days. My search terms often get turned into something else for no reason. If I search for any less common word, there's a good chance the results would not contain that word by default. Maybe I'm crazy, but is Google really improving over time, or actually getting worse?