If a google search for a book title and author's name (from a fairly full one like Stephen Jay Gould The Hedgehog, the Fox, and the Magister's Pox* to a simple one like Adapting Minds Buller) does not bring up the Google Books page for the volume in question within the top ten results, then there is no preview (or only a basically-useless snippet view) of the book. If there is a preview of the book, however, then the google books page will be in the top ten google results.
Known exceptions: if the book is very new, reviews, sales and publisher's pages will sometimes crowd the top ten and crowd out the preview; and if the author's name and title is sufficiently general, then non-relevant hits might crowd out the preview.
* And no, Google, I did not mean Ghould instead of Gould. Oi.