Search ebooks from Google

Using Google for searching ebooks

intitle:index.of? file extension Name of item

e.g. intitle:index.of? chm Hacking

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 Hacking.

 

Try this also

+("index of") +("/ebooks"|"/book") +(chm|pdf|zip|rar) +Hacking

or

allinurl: +(rar|chm|zip|pdf|tgz) Hacking
Enjoy