What happened when you search google for any specific keywords ? You must be getting a lot of results, Don't understand which is relevant to you.. Google Believe in Quantity not actually in quality. So what you do then? Use Advance Google Search Operators to restrict the search results only to book. But HOW?

Learn Google Hacking

Google Search Operators :

* link:URL = Shows other pages with links to that url.
* related:URL = same as “what’s related” on serps.
* site:domain.com = restricts search results to the given domain.
* allinurl:WORD = shows only pages with all terms in the url.
* inurl:WORD = like allinurl, but only for the next query word.
* allintitle:WORD = shows only results with terms in title.
* intitle:WORD = similar to allintitle, but only for the next word.
* cache:URL = will show the Google version of the passed url.
* info:URL = will show a page containing links to related searches, backlinks, and pages containing the url. This is the same as typing the url into the search box.
* spell:WORD = will spell check your query and search for it.
Visit for more Google Search Operators

Source : http://oophs.blogspot.com