Perhaps you should try some spelling variations:
21 sermons » 2 sermons, 1 sermons, 6 sermons
25 matthew » 15 matthew, 22 matthew, j matthew
2.1 early » 1.1 early
2 matthew » 22 matthew, 42 matthew, j matthew
11 early » 1791 early, 7 early, 8 early
21 early » 1.1 early
2c 51 » 24 51, c 51, 21 51
20 51 » 20 21, 24 51, 20 5

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 %((2 matthew) OR (((25 matthew) OR (_ matthew)))) xxviii%((2c 51) OR (20 51)) %21 sermons %((((21 early) OR (2.1 early))) OR (11 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22bible %2f n.t %((2 matthew) or (((25 matthew) or (_ matthew)))) xxviii%((2c 51) or (20 51)) %21 sermons %((((21 early) OR (2.1 early))) or (11 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22bible %2f n.t %((2 matthew) or (((25 matthew) or (_ matthew)))) xxviii%((2c 51) or (20 51)) %21 sermons %((((21 early) OR (2.1 early))) or (11 early)) works to 1800%22*.