See: <a target="_blank" href="https://github.com/dinkypumpkin/get_iplayer/issues/53" title="Programmes more than 7 days old do not appear in search results">Programmes more than 7 days old do not appear in search results</a> (opens in new window)

NOTE - Changes to the BBC today 29.10.2014 mean that NO searches will work when using get_iplayer. For further information please see this forum post.