Perhaps you should try some spelling variations:
4.1 description » 3.1 description, 5.1 description
2.1 description » 3.1 description, 5.1 description, 1.1 description
2f description » cbf description, scf description, 7 description
f description » 7 description, 8 description, self description
2f early » 24 early, 20 early, 21 early

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: %22bromley %28london%((3 england) OR (((((6 england) OR (5 england))) OR (_ england))))%29 %((((2f description) OR (((2.1 description) OR (4.1 description))))) OR (f description)) AND travel %2f early works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22bromley %28london%((3 england) or (((((6 england) or (5 england))) or (_ england))))%29 %((((2f description) or (((2.1 description) OR (4.1 description))))) or (f description)) and travel %2f early works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22bromley %28london%((3 england) or (((((6 england) or (5 england))) or (_ england))))%29 %((((2f description) or (((2.1 description) OR (4.1 description))))) or (f description)) and travel %2f early works to 1800%22*.