Lucene ignores common words and characters such as where, the, how, and other digits and letters which slow down your search without improving the results. We’ll indicate if a word has been excluded by displaying details on the results page below the search box. If a common word is essential to getting the results you want, you can include it by putting a “+” sign in front of it. (Be sure to include a space before the “+” sign.)
To find pages that include either of two search terms, add an uppercase OR between the terms.