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Section 3:
Using Search Engines Effectively

Introduction to Section 3: Using Search Engines Effectively
What is a Search Engine?
Different Kinds of Search Engines
True Search Engines
Web Directories
Hybrids
Meta Search Engines
Medical and Health Care Search Tools
Choosing a Search Engine: Pick from These Popular Engines
Search Engine Reality Check!
Why Do Results Vary From Search Engine to Search Engine?
How Do Search Engines Display Results?
How Do Search Engines Rank Results?
Review Options 1
Quiz Yourself 1
Getting the Best Results from Search Engines
'Web' and 'Directory' Options
Advanced Search Features
Boolean Logic: AND/OR
Entering Your Search Question
Review Options 2
Quiz Yourself 2
To Learn More About Using Search Engines Effectively
Evaluate Section 3 of the Tutorial
Go to Section 4 of the Tutorial

SECTION 3: USING SEARCH ENGINES EFFECTIVELY

BOOLEAN LOGIC: AND/OR


Another way to get the best results from search engines is to experiment with BOOLEAN LOGIC -- AND, OR.


AND is the same as the "1. with all of the words" option. Using an AND between search terms means that both or all of the search terms must appear in the retrieved Web sites.

Using an AND will find the search terms in any order, anywhere on the Web site unless you use other ADVANCED FEATURES to select a "phrase" or select where in the site the search terms appear.

AND Examples:

hiv and pregnancy

Finds Web sites that includes both of the words "hiv" and "pregnancy".

aids and pain control

Finds Web sites that includes both "aids" and the phrase "pain control".

Some search engines would require you to put "quotes" around the phrase. Always check the Advanced Search options to find out for sure whether the quotes are required.

hiv and treatment and drugs

Finds Web sites that includes all of the terms "hiv" and "treatment" and "drugs".

Remember that these terms can appear in any order anywhere on the site (unless we apply other Advanced Search features).


   
 
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