Page:Untangling the Web.pdf/62

DOCID: 4046925

UNCLASSIFIED//FOR OFFICIAL USE ONLY

Google will search for several punctuation marks and special characters:

• the ampersand [&]: Google will search for [barnes&noble] or [barnes & noble]
• the underscore [ _ ]: Google will search for a phrase such as [public_records.doc] or even more specifically [public_records.html]
• the dollar sign [$], used with a number, for example [$100]
• the sharp [#], for example [F#]
• the slash, but only when used in the search [I/O]
• While Google will not actually search on a plus sign, the search engine does recognize the difference between searches for [c], [c+], and [c++]

Google Advanced Search

Google has a number of "query modifiers" to restrict searches and make them more effective in many cases. These query modifiers can be used in simple search in the following syntax or on the advanced web search page using the appropriate menu options. The query modifiers Google supports are:

• site: restricts results to websites in a given domain. This syntax no longer requires you to add a keyword. Google's site: syntax will also search within folders, e. g., [site:jpl.nasa.gov/technology]. Remember you can add keywords to the site: search. [site:jpl.nasa.gov/technology "jpl spacecraft"]
  
  Advanced Web Search > Domains
  
  Examples of how to use the site: command:
  
  [shuttle site:www.nasa.gov] finds pages about the space shuttle at the NASA website.
  
  [site:info] finds all the pages in the Google database in the .info top-level domain
  
  ["bulletin officiel" site:fr] finds pages in the French top-level domain about official bulletins
  
  [cirrus -site:mastercard.com] finds pages about the keyword cirrus that are not at the Mastercard.com site
  
  [site:jpl.nasa.gov/technology]