because its a more specific way and easy
what term would be seen in Boolean search
when you want to narrow a search
Avasearch.com announced that they will create a search engine to be used only for boolean search terms.
Yes it does.
A keyword search searches for exact word when a boolean search looks for synonym's. The difference between a keyword search and a boolean search is the focus of the search. A keyword search is a search for an exact word. A boolean search is a search for a synonym.
A Boolean search allows you to combine phrases and words using the words (And, Or, Not) to define your search.
Margaret found Boolean search logic very simple to understand, because she could add logical words to her search, such as and and not.When Martin used Boolean search logic to find accommodations, he found them in the neighborhood and at the price that he wanted.
Using AND
Boolean connectors include "OR," "AND," and "NOT." They may join keywords or keyword phrases. People may use Boolean connectors to refine searches when using a search engine.
try checking out <a href=http://booleanlogic.net/boolean-search-basics>boolean search</a> they have the basics there from what i found.
boolean connectors
Boolean Search is something like using differnt operators like and,or, not etc