I tried that, and it worked alright. I guess your computer is fraught with glitchism. I prefer
http://www.onelook.com/?loc=rz4&w=*i
sm&scwo=1&sswo=1 for its many options and various dictionaries. And you can enter something like *ism and get all the words ending in "ism", more isms than michael_d cares to think about.