The advanced search features of Google and Yahoo! and other search engines can help simplify your life. Here is a simple example, using the results of a recent Google search.
Entering the term DESULFURIZATION results in 795,000 hits.
Adding the term DIESEL reduces the number to 88,500
Adding the year 2009 reduces the number again to 21,400
And finally, restricting the search to PDF files only results in 4,880 hits
Why 2009? Because you may be interested in only the most recent articles on diesel desulfurization technology.
Why PDF format? Because you may be looking for free full text articles, and many of the PDFs you find will fit that requirement.
Whatever your requirements, it pays to take a few minutes to explore the advanced search features of your favorite search engine.
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