Click on the Title
Browse to see the pages available
Click on a book title and the viewer will open to an entry with your search words highlighted. The example in the image is a book that offers limited preview. Use the arrows to scroll through the available pages. These pages are scanned from the actual book.
Eventually, you’ll run into a notice that some pages are omitted. This notice means that Google is respecting the rights of the copyright owner and not showing more of the book than the owner has agreed to.