Perhaps you should try some spelling variations:
20.1 description » 2.1 description, 10.1 description, 2.4.1 description
20 description » 10 description, 30 description, 2000 description
2f early » 20 early, ef early, f early
21 early » 2.1 early, 1 early, 1.1 early
11 early » 1 early, 1791 early, 5 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: %22england %((20 description) OR (20.1 description)) AND travel %((2f early) OR (((21 early) OR (11 early)))) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22england %((20 description) OR (20.1 description)) and travel %((2f early) or (((21 early) or (11 early)))) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22england %((20 description) OR (20.1 description)) and travel %((2f early) or (((21 early) or (11 early)))) works to 1800%22*.