Perhaps you should try some spelling variations:
21 bishop » 11 bishop, 128 bishop, a bishop
2f saint » 25 saint, _ saint, a saint
21 saint » 25 saint, 2013 saint, 2015 saint
2 saints » _ saints, 4 saints, 5 saints
2 saint » 5 saint, 2 salient, 2 saving

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 (((2 saints) OR (1 saint))))) OR (2 saint))%((21 bishop) OR (_ bishop)) of smyrna%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22polycarp %((((((2f saint) OR (21 saint))) or (((2 saints) or (1 saint))))) or (2 saint))%((21 bishop) or (_ bishop)) of smyrna%22".
• Adding a wildcard symbol may retrieve word variants: %22polycarp %((((((2f saint) OR (21 saint))) or (((2 saints) or (1 saint))))) or (2 saint))%((21 bishop) or (_ bishop)) of smyrna%22*.