Search keywords in titles

Hello!  Love the plugin so far. It is possible to have the RSS Echo plugin search a website (CNN for example) and create posts on my own website based off of keywords in the tiles? For example.  I want RSS Echo to search CNN for the keywords "Zion" or "Bryce Canyon"  in the titles of their articles.  If there is "Zion" or "Bryce Canyon" in the articles, a post will be created on my own website. I'm trying to create an outdoor news site, but don't want everything else from CNN and other sources. Is this possible?