Perhaps you should try some spelling variations:
2c imaginary » _ imaginary, 13 imaginary, 5 imaginary
2 imaginary » _ imaginary, 5 imaginary, 6 imaginary
2f early » 20 early, 22 early, 23 early
21 early » 2.1 early, 1 early, 11 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: %22voyages%((2c imaginary) OR (2 imaginary)) %((2f early) OR (21 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22voyages%((2c imaginary) or (2 imaginary)) %((2f early) OR (21 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22voyages%((2c imaginary) or (2 imaginary)) %((2f early) OR (21 early)) works to 1800%22*.