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Not sure about the & (That doesn't mean it's not true) however if you are interested in search operators have a look here on Moz : http://moz.com/blog/25-killer-combos-for-googles-site-operator If you want to know how many pages are indexed by Google then use the WMT here http://www.google.com/webmasters/

Sandra, There's no outright way to compare google's cache of today with its cache of a date in the past that I know of.  If you had google analytics installed at that time, you could go about getting useful info from that source.  Since the primary matter is really which pages were bringing in search traffic  then that are not bringing in search traffic now, you could compare landing page stats from today vs. two years ago to see which pages are not bringing in traffic any longer. Any chance your website was redesigned in the mean time? Sometimes change of navigation, architecture, or URLs can be the culprit.

Hi Sandra, I apologize it has taken me this long to get back to you about this post. It looks like you are in good hands and it is all settled. Sincerely, Thomas