Here are some useful tips to use google search more effectively.I found these tips very useful for me,hope that this would be useful for everyone who all are using google search.
Link:
http://www.lifehack.org/articles/technology/20-tips-use-google-search-efficiently.html
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Link:
http://www.lifehack.org/articles/technology/20-tips-use-google-search-efficiently.html
..edited