You can quickly add author name variations from a browsable list of authors. Click Author Lookup on the Advanced Search screen to view the list.
Type an author name into the Jump to box, or browse the alphabetical list.
Use the checkbox(es) to select the author name(s) and add them to your Selected Authors list. When you have the name(s) selected, you can select a Boolean operator AND or OR and add those names to the search by clicking the ADD TO SEARCH button.