Doing search on google is an art. There are a large number of facilities on google which can help you to have better search results. I have already written an article on how to search on google. Here I am giving a list of tools that will help you to do sharp search, right search on google 
- Google - The Search Engine.
- Google Advanced Search - search based on specific parameters
- Google Suggest - As you type into the search box, it guesses what you’re typing and offers suggestions.
- Google Trends - It helps you to see and compare what the whole world is searching for.
- Google Personalized Search - Enable you to use your search experience.
- Google Search History - Keeps a record of all searches while a user is logged into his Google Account
- Google Blog search - Used to search Blogs
- Blogger Blog Search - Search for blogs all over the web
- Google Directory - Search the web organized by topic into categories (dmoz directory)
- Google Video - Search Videos
- Google Image Search - Search Images
- Google Music Search - Search Music
- Google Book Search - Search the full text of books
- Google Catalogs - helps you browse and search merchant-provided catalogs
- Froogle - A Shopping search engine
- Google News - Search and browse 4,500 news sources
- Google News archive search - provides an easy way to search and explore historical archives.
- Google Scholar - search for the most relevant research across the world of scholarly research.
- Google Patent Search - find the full text of the U.S. patent corpus and find patents that interest you.
- Google Maps - View maps, get driving directions, and search for local businesses and services.
- Google Public Service Search - offers educational institutions and non-profit organizations free SiteSearch,
- Google’s University Search - search any specific school or college websites
- Google Ride Finder - view taxi or shuttle locations in several cities.
- Google Base - submit all types of online and offline content that is hosted and made searchable online.
- Google’s Special Searches - Search any special topic.
- Google Apple/Macintosh Search - Search for Apple/Macintosh-related sites
- Google Microsoft Search - Search Microsoft-related sites
- Google Linux Search - Search all Linux related pages
- Google U.S. Government Search - Search all .gov and .mil sites
- BSD Unix - Search web stuffs related to BSD operating system
