Using Google for searching ebooks
Google has some fantastic and amazing potential for you to find whatever you want to find on the internet. To search for a book / program / file then maybe try the following:
Go to Google’s search page and use the following criteria in the search dialog
intitle:index.of? file extension Name of item
e.g. intitle:index.of? chm syngress
This will give you a listing of all websites that google has cached that contain references to files in CHM format that are published by SYNGRESS.