Perhaps you should try some spelling variations:
2f fiction » f fiction, la fiction, 3 fiction
1720 early » 1727 early, 1820 early, 1770 early
2 fiction » 2 fixation, 2 fission, 1792 fiction
2f early » 24 early, 21 early, 23 early
22 early » 2 early, 12 early, 1722 early
20 early » 10 early, 1820 early

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%22ethiopia %((2f fiction) OR (2 fiction)) %((((2f early) OR (22 early))) OR (((20 early) OR (1720 early)))) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22ethiopia %((2f fiction) OR (2 fiction)) %((((2f early) OR (22 early))) OR (((20 early) OR (1720 early)))) works to 1800%22*.