If you're going to post an article, why would you care about keywords when conducting a search to see if it's already been posted?
Perform the search by title.
Keyword searches are used when looking for a particular topic, not a specific article.
If I remember correctly, the article posted 2 minutes after yours, which was probably why yours didn't show to me right away. Seeing the story probably was picked up by us both at nearly the same time stands to reason. It (searching by keyword) has worked for me before, no reason for it to not work again here and there. Not all articles are titled identically, as I am sure you know.
Relax, dupes aren't meant to step on toes. :) Hence my thanks for mhking alerting me to your original, and first post?