Perhaps you should try some spelling variations:
2015 saint » 2013 saint, 2015 san, 2015 joint
21 bishop » 11 bishop, 128 bishop, _ bishop
25 saint » 5 saint, 25 saving, 25 saying
15 saint » 1 saint, 18 saint, 5 saint
2_ saint » 2 saint, de saint, a saint
21 saint » 1 saint, 2 saint, 2013 saint

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %22polycarp %((((((25 saint) OR (15 saint))) OR (_ saint))) OR (((((2_ saint) OR (21 saint))) OR (2015 saint))))%21 bishop of smyrna%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22polycarp %((((((25 saint) OR (15 saint))) or (_ saint))) or (((((2_ saint) or (21 saint))) or (2015 saint))))%21 bishop of smyrna%22".
• Adding a wildcard symbol may retrieve word variants: %22polycarp %((((((25 saint) OR (15 saint))) or (_ saint))) or (((((2_ saint) or (21 saint))) or (2015 saint))))%21 bishop of smyrna%22*.