Perhaps you should try some spelling variations:
2f emperor » _ emperor, i emperor, ii emperor
27 1769 » 27 1799, 27 1789, 17 1769
2 1769 » 12 1769, 24 1769, 20 1769
25 i » 25 _, 25 1, 25 c
25 a » 2 a, 25 _, 20 a

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 i) OR (25 a))) OR (5 i))) OR (2 i)) %2f emperor of the french %((2 1769) OR (27 1769))-1821%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22napoleon %((((((25 i) or (25 a))) or (5 i))) or (2 i)) %2f emperor of the french %((2 1769) OR (27 1769))-1821%22".
• Adding a wildcard symbol may retrieve word variants: %22napoleon %((((((25 i) or (25 a))) or (5 i))) or (2 i)) %2f emperor of the french %((2 1769) OR (27 1769))-1821%22*.