Tabs and Search Limitations
When your search yields results from diverse types of sources, you'll see your results organized into tabs. Tabs group the information you'll find into content areas that contain similar types of documents. Tabs with no results are "grayed out" and will not work. Directly below the tab name you will find in parentheses a count of the number or results found for that tab.
When viewing your results list, you may find directly below the tab name one or more ways to limit your current results. The search limiters displayed depend on the tab you are viewing and the available content contained in your results. Certain search limits you entered when you created your search query will appear here. You may remove these limits to expand your search results. Conversely, you may enter search limits to try to narrow the results. You can also use the Search sidebar to the left to narrow your results. In the "Sort by" box to the right of your results, you can organize your results chronologically by publication date or by relevance, which sorts by how closely documents match your search query.