Try this, go to Google and type in "eggzackly this".

Two results not containing "eggz" at all. Two results containing "eggzackly<punctuation>this" Two results containing "eggzackly" but missing "this".

Google Search is broken. It no longer does what it's directed, it just takes a guess. I suspect part of this is because someone decided that "no results found" was the worst possible result a search engine could give.