Perhaps you should try some spelling variations:
matthew xiii » matthew xxii, matthew xvi, matthew xxiv
21 sermons » 1 sermons, 6 sermons, 14 sermons
2f early » 20 early, 21 early, ef early
c 51 » c 1, c 5, c 11
_ 51 » _ 1, _ 5, _ 5g

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: %22bible %2f n.t %2f ((matthew xiii) OR (matthew xxv))%((c 51) OR (_ 51)) %((21 sermons) OR (2 sermons)) %2f early works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22bible %2f n.t %2f ((matthew xiii) or (matthew xxv))%((c 51) or (_ 51)) %((21 sermons) OR (2 sermons)) %2f early works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22bible %2f n.t %2f ((matthew xiii) or (matthew xxv))%((c 51) or (_ 51)) %((21 sermons) OR (2 sermons)) %2f early works to 1800%22*.