Perhaps you should try some spelling variations:
2f sermons » 2 sermons, 21 sermons, 24 sermons
2f matthew » 22 matthew, 25 matthew, _ matthew
2 matthew » 22 matthew, 25 matthew, 42 matthew
2f early » 22 early, f early, sf early
21 early » 2.1 early, 1 early, 11 early
20 early » 10 early, 1820 early, 1720 early
2c 51 » 24 51, c 51, 20 51

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) OR (2 matthew)) xxv%2c 51 %2f sermons %((((2f early) OR (21 early))) OR (20 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22bible %2f n.t %((2f matthew) or (2 matthew)) xxv%2c 51 %2f sermons %((((2f early) OR (21 early))) or (20 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22bible %2f n.t %((2f matthew) or (2 matthew)) xxv%2c 51 %2f sermons %((((2f early) OR (21 early))) or (20 early)) works to 1800%22*.