Perhaps you should try some spelling variations:
c bishops » _ bishops, arch bishops, call bishops
2f saint » 21 saint, _ saint, a saint
25 saint » 5 saint, 2015 saint, 25 saving
15 saint » 5 saint, 14 saint, 16 saint
18 saint » 98 saint, _ saint, a saint
10 saint » 10 saints, 14 saint, 16 saint
c bishop » _ bishop, a bishop, d bishop
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 (2 saint))) OR (((25 saint) OR (((((15 saint) OR (18 saint))) OR (10 saint))))))) OR (1 saint))%((c bishop) OR (c bishops)) of smyrna%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22polycarp %((((((2f saint) or (2 saint))) or (((25 saint) or (((((15 saint) OR (18 saint))) or (10 saint))))))) or (1 saint))%((c bishop) or (c bishops)) of smyrna%22".
• Adding a wildcard symbol may retrieve word variants: %22polycarp %((((((2f saint) or (2 saint))) or (((25 saint) or (((((15 saint) OR (18 saint))) or (10 saint))))))) or (1 saint))%((c bishop) or (c bishops)) of smyrna%22*.