Perhaps you should try some spelling variations:
15 matthew » _ matthew, dr matthew, 8 matthew
6 matthew » _ matthew, 8 matthew, dr matthew
6 sermons » 2 sermons
1 sermons » 2 sermons
11 early » 1 early, 1791 early, 5 early
2c 51 » 24 51, c 51, 20 51

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 %((15 matthew) OR (6 matthew)) xxviii%2c 51 %((6 sermons) OR (1 sermons)) %11 early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22bible %2f n.t %((15 matthew) or (6 matthew)) xxviii%2c 51 %((6 sermons) or (1 sermons)) %11 early works to 1800%22*.