Advanced Search — Use this search option to create complex searches using field tags. Each search term must be prefaced by a field tag, and search terms must be joined by Boolean operators.

In this example, we are searching for records on Attention Deficit Disorder and psychotropic medications used in the treatment of this condition. We have combined sets #1 and #3 using the AND Boolean operator to create set #4. This new set includes 43 records that appear in both set #1 and set #3.