Now let's try a search for sharks.  Remember that the computer only matches letters so if you want to find all of the entries with sharks, you need to use OR so that you get both the singular and plural form of the word.

shark OR sharks

             

When you do this search in POWER, you find 59 entries; there were only 45 when you did the Basic search so OR broadened  your search and gave you more results.  

Try it!     SEARCH

Another way to get both the singular and the plural of a word is to use a truncation symbol  *The computer will match only those letters in front of the truncation symbol.
shark
* gives you entries with both shark and sharks.

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