Perhaps you should try some spelling variations:
2c john » c john, 21 john, 25 john
22 john » 12 john
23 john » 13 john
20 1764 » 20 1767, 20 1734
20 1721 » 20 1791
20 1794 » 28 1794, 2 1794, 20 1798
20 1714 » 20th 1714
3 john » 1 john, 4 john
2 john » 1 john, 4 john, 5 john

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: %22brown%((((((2c john) OR (22 john))) OR (((23 john) OR (3 john))))) OR (2 john)) %((((20 1764) OR (20 1721))) OR (((20 1794) OR (20 1714))))-1791%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22brown%((((((2c john) OR (22 john))) or (((23 john) or (3 john))))) or (2 john)) %((((20 1764) or (20 1721))) or (((20 1794) or (20 1714))))-1791%22".
• Adding a wildcard symbol may retrieve word variants: %22brown%((((((2c john) OR (22 john))) or (((23 john) or (3 john))))) or (2 john)) %((((20 1764) or (20 1721))) or (((20 1794) or (20 1714))))-1791%22*.