I know that. So why not post the search link instead - i.e. one that will work for everyone? Or HN could implement a "search on Google" feature to get around it. Requiring readers to a) know this hack and b) perform it on a mobile device keyboard is the ultimate in poor usability.
You don't need a keyboard. Click on the comments link and then click on the link marked "web" at the top of the page in the comments. There is a search link.
I've never noticed the "web" link before - that works for me (should this not be "search", btw). Thanks.