Multi-field Search is useful if you wish to retrieve records where a search term appears in a particular field, such as the Author or Title field. It is not designed for comprehensive topic searching, for which you are advised to use Advanced Search, but can be useful to restrict a textword search to a particular field.
To build a multi-field search, click the Multi-Field Search tab and type your search terms into the form. You can choose to type in words or phrases. Choose which fields to search using the drop-down menus on the right. Combine with the operators AND and OR using the drop-down menus on the left.