Google search can be very useful if you know how to use them.Here are some google dorks which can be useful while searching on google.Check them and enjoy google search.There are lot of google dorks i have only only given some useful ones..
site:domain.com “search term = restricts search results to the given domain.
allinurl:WORDS = shows only pages with all search terms in the url.
inurl:WORD = like allinurl: but filters the URL based on the first term only.
allintitle:WORD = shows only results with terms in title
intitle:WORD = similar to allintitle, but only for the next word.
cache:URL = will show the Google cached version of the URL.
info:URL = will show a page containing links to related searches, backlinks, and pages
link:URL = lists other pages that link to the URL.
related:URL = lists other pages that are related to the URL.
filetype:FILETYPE = will restrict searches to that filetype
-filetype:FILETYPE = will remove that file type from the search.
site:www.anysite.net “+www.anysite.net” = shows you how many pages of your site are indexed by google
allintext: = searches only within text of pages, but not in the links or page title
allinlinks: = searches only within links, not text or title