If you remember the section (News, Money, Sports, ... ) there's a link in the footer (bottom) to its "archives". For example, this is for News:
http://www.msn.com/en-us/news/archive-0
Once there you can Ctrl+F and type what you remember reading as the title/header. It may get a bit tricky if the article is over a week old, but I hope it helps!