Perhaps you should try some spelling variations:
22great britain » great britain, xgreat britain, zgreat britain
2f foreign » 2 foreign, 23 foreign, 24 foreign
23 denmark » 2.3 denmark, 3 denmark, 13 denmark
1.1 early » 11 early, 1771 early, 1761 early
2f early » 20 early, 22 early, sf early
21 early » 2.1 early, 11 early
f early » sf early, 5 early, 8 early

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: %22great britain %2f foreign relations %23 denmark %((((2f early) OR (f early))) OR (((21 early) OR (((1.1 early) OR (1791 early)))))) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %2f foreign relations %23 denmark %((((2f early) or (f early))) or (((21 early) or (((1.1 early) OR (1791 early)))))) works to 1800%22*".