Perhaps you should try some spelling variations:
2f emperor » _ emperor, i emperor, ii emperor
27 1769 » 27 1799, 27 1789, 17 1769
24 1769 » 24 1765, 24 1768
24 1779 » 24 1777, 26 1779
24 1789 » 4 1789, 14 1789, 24 1783
25 _ » 2 _, 20 _, 21 _

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: %22napoleon %((25 _) OR (2 i)) %2f emperor of the french %((27 1769) OR (((((24 1769) OR (24 1779))) OR (24 1789))))-1821%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22napoleon %((25 _) or (2 i)) %2f emperor of the french %((27 1769) or (((((24 1769) OR (24 1779))) or (24 1789))))-1821%22".
• Adding a wildcard symbol may retrieve word variants: %22napoleon %((25 _) or (2 i)) %2f emperor of the french %((27 1769) or (((((24 1769) OR (24 1779))) or (24 1789))))-1821%22*.