The Cross-Search box searches upon Name and Subject information as well as the full descriptive parts of records at the same time.
Name and Subject searches will each only look in the respective name and subject parts of the database. A Cross-Search will look in both of these at the same time. It will also examine all of the descriptive information about an organisation or service. This facilitates a more comprehensive examination of records for information that may not be covered by the controlled list of subject headings used in subject searches.
The way that information is entered at the search screen is important. Please have a look at the notes on how to search effectively in the Search Basics section.