Agreed, Google fails at this, however alternative search engines, http://searchco.de/?q=%5B+-~%5D+ext%3Apod&cs=on http://searchco.de/?q=%5B+-~%5D+ext%3Apod&cs=

Agreed, Google fails at this, however alternative search engines, http://searchco.de/?q=%5B+-~%5D+ext%3Apod&cs=on http://searchco.de/?q=%5B+-~%5D+ext%3Apod&cs=on http://symbolhound.com/?q=%5B+-~%5D http://symbolhound.com/?q=%5B+-~%5D Symbolhound gives the answer quite well, and searchco.de has some examples of its use in the results.