In an Advanced search you can search for more than one term at once. Two lines of search terms are provided. Click + Add row to open a third search box for a third term. (You can continue to add search boxes to search for more than two terms.)
Between the input boxes is a list box headed And. This is where you select how you want to combine your terms. The options are And, Or, Not.
Searching for terms in different search areas
If you wish, you can specify a different search area for each of your terms. Choose the appropriate search area (e.g., Subject) from the box.
More on Advanced searching: