Perhaps you should try some spelling variations:
2.3 denmark » 2.4 denmark, 13 denmark, 2 denmark
2f foreign » 2 foreign, 23 foreign, 24 foreign
2f denmark » 2 denmark, 22 denmark, 2.4 denmark
23 denmark » 13 denmark, 2 denmark, 22 denmark
22 early » 12 early, 1722 early, 1.2 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: %great britain %2f foreign relations %((2f denmark) OR (((23 denmark) OR (2.3 denmark)))) %((22 early) OR (2 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%great britain %2f foreign relations %((2f denmark) or (((23 denmark) or (2.3 denmark)))) %((22 early) OR (2 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %great britain %2f foreign relations %((2f denmark) or (((23 denmark) or (2.3 denmark)))) %((22 early) OR (2 early)) works to 1800%22*.