Perhaps you should try some spelling variations:
matthew xxviii » matthew xxii, matthew xxv, matthew vii
matthew xiii » matthew xxii, matthew xvi, matthew xxiv
4 sermons » 14 sermons, 1 sermons, 6 sermons
2f early » 20 early, ef early, f early
21 early » 2.1 early, 1 early, 1.1 early
11 early » 1 early, 1791 early, 8 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 xxviii) OR (matthew xiii))%2c 51 %((4 sermons) OR (2 sermons)) %((2f early) OR (((21 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 %2f ((matthew xxviii) or (matthew xiii))%2c 51 %((4 sermons) or (2 sermons)) %((2f early) or (((21 early) OR (11 early)))) works to 1800%22*".