Perhaps you should try some spelling variations:
matthew xxviii » matthew xiii, matthew xxv, matthew vii
matthew xxii » matthew xxv, matthew xvi
21 sermons » 2 sermons, 1 sermons, 6 sermons
2f early » 20 early, ef early, f early
21 early » 2.1 early, 1 early, 11 early
2c 51 » 24 51, 20 51, 21 51
c 51 » c 1, c 5, _ 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 xxii))%((2c 51) OR (c 51)) %21 sermons %((2f early) OR (21 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 xxii))%((2c 51) OR (c 51)) %21 sermons %((2f early) or (21 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22bible %2f n.t %2f ((matthew xxviii) or (matthew xxii))%((2c 51) OR (c 51)) %21 sermons %((2f early) or (21 early)) works to 1800%22*.