Is implementing search for symbols impossible ?

Question

I tried to Google for symbol £ but surprised with a response

Your search - £ - did not match any documents.

'£' must be a part of some font, any special reason that its not considered by Google ?

EDIT:

Even SO doesn't give any results...

Answer 1

It's not impossible, but symbols are usually excluded from the haystack pool since the words are usually far more important to users.