Perhaps you should try some spelling variations:
2.3 denmark » 2.4 denmark, 13 denmark, 8.2 denmark
2f foreign » 23 foreign, 24 foreign, 22 foreign
2f denmark » 22 denmark, 2.4 denmark, _ denmark
23 denmark » 13 denmark, 22 denmark, 83 denmark
1722 early » 1727 early
2 foreign » _ foreign, 4 foreign, 5 foreign
3 foreign » _ foreign
2 denmark » _ denmark, 5 denmark, 4 denmark

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) OR (((2 foreign) OR (3 foreign)))) relations %((((2f denmark) OR (2 denmark))) OR (((23 denmark) OR (2.3 denmark)))) %1722 early works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%great britain %((2f foreign) or (((2 foreign) OR (3 foreign)))) relations %((((2f denmark) or (2 denmark))) or (((23 denmark) or (2.3 denmark)))) %1722 early works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %great britain %((2f foreign) or (((2 foreign) OR (3 foreign)))) relations %((((2f denmark) or (2 denmark))) or (((23 denmark) or (2.3 denmark)))) %1722 early works to 1800%22*.