Operators are powerful tools in web search, and not nearly enough people are aware of them, let alone use them. What an operator does is it effectively adds a layer of intelligence to your search terms, telling the search engine to include specific words, exclude other words, or include any of several words.

Here are some examples:
• Narrow the search with the minus operator – This translates to effectively telling the search engine you DO NOT want a part of your search term.
  Taking our previous example – Instead of searching for “caterpillar bug”, you could instead use the minus operator to weed out results about the company like this: “caterpillar -inc”.
  No pages containing references to the corporation will be returned.
• Search for either of two terms with the OR operator – When you include a pipe character(|) between two words, this tells the search engine to return results with either of those words present. If we were to search for “two three bedroom”, for instance, we would get results for both two-bedroom and three-bedroom homes, but as we page through the results, we would find that they start to include only “two” or “bedroom”.