How to search on Search Engine

Find EDU domains only:

"Keyword" inurl:.edu

Find all sites in our topic: 

intitle:"Keyword"

Find all inner pages of a specific site, for example digg.com:

"Keyword" site:digg.com

Find only BlogEngine blog:

"Keyword" "Notify me when new comments are added" + "Powered by BlogEngine.NET"

Find only Movable Type blog:

"Keyword" "comment anonymously" + "Email Address" + "Powered by Movable Type"-movabletype.org

Find only WordPress blog: 

"Keyword" "name" + "email" + "powered by wordpress"

Find only Blog2evolution blog:

"Keyword" "Your email address will not be Revealed on this site." + "Your URL Will not be displayed."

Find only ExpressionEngine blog: 

"Keyword" "comment" "Powered By ExpressionEngine"-forum

Find only Drupal blog: 

"Keyword" "Your name" "Subject" "Comment" inurl: comment/reply/1