Perhaps you should try some spelling variations:
2c bishop » c bishop, 21 bishop, r.c bishop
2f saint » a saint, 1 saint, et saint
21 saint » 1 saint, 2013 saint, 2015 saint
25 saint » 5 saint, 15 saint, 2015 saint
2_ saint » a saint, 1 saint, et saint
2 saint » 2 saints, 5 saint, 2 salient

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 %((((((((((2f saint) OR (21 saint))) OR (de saint))) OR (((2 saint) OR (_ saint))))) OR (25 saint))) OR (2_ saint))%2c bishop of smyrna%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22polycarp %((((((((((2f saint) OR (21 saint))) or (de saint))) or (((2 saint) or (_ saint))))) or (25 saint))) or (2_ saint))%2c bishop of smyrna%22".
• Adding a wildcard symbol may retrieve word variants: %22polycarp %((((((((((2f saint) OR (21 saint))) or (de saint))) or (((2 saint) or (_ saint))))) or (25 saint))) or (2_ saint))%2c bishop of smyrna%22*.