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Search Tips

Please use the tips below to expand or filter the results of your query.


  • Search with the keyword NEAR, rather than AND, for words close to each other. For example, both of these queries, system and manager and system near manager, look for the words system and manager on the same page. But with NEAR, the returned pages are ranked in order of proximity: The closer together the words are, the higher the rank of that page.
  • Refine your queries with the AND NOT keywords to exclude certain text from your search. For example, if you want to find all instances of wheat but not soft wheat, write the following query: wheat AND NOT soft
  • Add the OR keyword to find all instances of either one word or another, for example: wheat or ash
    This query finds all pages that mention wheat or ash or both.
  • Queries are case-insensitive, so you can type your query in uppercase or lowercase.
  • You can search for any word except for those in the exception list (this includes a, an, and, as, and other common words), which are ignored during a search.
  • Punctuation marks such as the period (.), colon (:), semicolon (;), and comma (,) are ignored during a search.
  • To use specially treated characters such as &, |, ^, #, @, $, (, ), in a query, enclose your query in quotation marks (").
  • Put quotation marks around keywords if you want to search them literally. For instance, if you type the following query: "citric near acid" the search will literally look for the complete phrase citric near acid, but if you type the same query without the quotation marks: citric near acid the search will return all documents for the words citric and acid.