alt Hacker NewsHackerNews search respects double quotes around your terms as an exact match, as do many other search engines.
For example search for "Amerca" with and without quotes. Without quotes you get content for "America" but with quotes you only get the exact typo match.
Just confirmed! (Is this new? I could swear it didn't work a few months ago when I was looking for stories about Bright Data before all the news articles about the residential proxies.)