Therefore, if your initial search does not return a document relevant to your question, try removing one or more words to get a wider range of documents. Separate your search criteria with spaces. Searches are not case sensitive, unless you enclose your search terms in quotation marks. Most punctuation marks are treated as spaces. If you must find a term with a punctuation mark, try enclosing it in quotes.
Plurals are the exception to the above rule.
For example, a search on file will return all texts containing the word files as well, and vice versa. In other words, a search for mice will not necessarily return all documents containing mouse . However, if you want such terms included in your search, enclose them in double quotes. Sometimes, however, judicious use of question words can help narrow a search that would otherwise find more documents than you care to sift through. Avoid broad or vague terms, especially in single-word searches.