On 14 Oct 2000, 11:43, George wrote:

> When do we use stop sign + or -? Can you illustrate? Are they useful.
> For example, if I want to find out the "future study program in the
> universities of the USA". Thanks.

Read the tutorial at Search Engines Watch:

"Search Engine Math"

http://searchenginewatch.com/facts/math.html

This same guide also shows you how to use quotation marks and how to 
combine all these techniques, as well.


Alan
[EMAIL PROTECTED]

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