Not all fields available for searching may appear on the search form. If you want to search other fields or narrow your search further, try the Expert Search. More operators are available in the Expert Search. Your expanded query shows up on the top of the results page. You could save favorite Expert Search queries in a text file, keeping them available for future use.
Similar words have characters inserted, deleted, or transposed.
The more instances of these words in a page, the higher it appears in the results list. Note that this only works for date fields, not text. NIH Enclose terms in double quotation marks if you want the search engine to take them literally . The words AND, OR, and NOT are always treated as Verity Query Language operators unless they are enclosed within double quotation marks. The search engine will find pages that contain at least one of your search terms.