Perhaps you should try some spelling variations:
1.1 early » 1791 early, 1771 early, 1761 early
2f early » 22 early, f early, sf early
20 early » 10 early, 1820 early, 1720 early
21 early » 2.1 early
11 early » 1791 early, 5 early, 8 early

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: %22opera %((((2f early) OR (20 early))) OR (((((21 early) OR (1.1 early))) OR (11 early)))) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22opera %((((2f early) OR (20 early))) or (((((21 early) or (1.1 early))) or (11 early)))) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22opera %((((2f early) OR (20 early))) or (((((21 early) or (1.1 early))) or (11 early)))) works to 1800%22*.