Using the word "intercept" and making sure the pull down box below the search box is set to "titles," I Get:
http://www.freerepublic.com/focus/search?m=all;o=time;q=quick;s=intercept
Search isn't the greatest feature of Free Republic.
I usually use Google.
Query the title and add “Free Republic,” in quotes.
A guy here at FR showed me another, better way to do that at Google, but I forgot to write it down.
Using his way, you could find every FR post on Google just seconds after it was posted at Free Republic.