You appear to be asking:
"I am unable to remember the address of a website I visit five times per day. How can I fix this problem?"
You have three options:
) Remember the address of the site. Or just remember that it begins with 'n' and, as Stratoscope says, Chrome will do the rest
) Set up a local DNS server so that www.hackernews.com -> news.ycombinator.com
) Ask pg to buy hackernews.com
I would strongly recommend the first option.