Perhaps you should try some spelling variations:
21 sermons » 2 sermons, 1 sermons, 6 sermons
2f early » 20 early, 21 early, 22 early
2f john » f john, 23 john, 21 john
22 john » 2 john, 12 john, 23 john
12c 12 » 12c 12c, 12c r2, 12c 14
2c 12 » tc 12, pc 12, 20 12

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 john) OR (22 john)) i%((2c 12) OR (12c 12)) %21 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 john) OR (22 john)) i%((2c 12) or (12c 12)) %21 sermons %2f early works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22bible %2f n.t %((2f john) OR (22 john)) i%((2c 12) or (12c 12)) %21 sermons %2f early works to 1800%22*.