To search for a simple text string in any record
  content, enter the text string. 
    For example, to find the text “warship” in any record
    content:
    - 
        In the Query Text box, enter:
        
warship
 - In the Results options section, select the check box for Records.
 - 
        To find a simple text string in any record name, title, description, or content, enter
          the following in the Query Text box:
        
keywords:warship
The keywords field is a special field name that allows you to match against the name, title, description, and content of a record.
The syntax format of the keywords field, the colon (:), followed by the value to match against, is the basic syntax for matching against a field in search queries.