Perhaps you should try some spelling variations:
22great britain » great britain, xgreat britain, zgreat britain
2 foreign » 3 foreign, 4 foreign, 5 foreign
2 denmark » _ denmark, 5 denmark, 4 denmark
2f early » ef early, f early, sf early
20 early » 1820 early, 1720 early
10 early » 1800 early, 1820 early, 1770 early
21 early » 2.1 early, 1 early, 11 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 %2 foreign relations %2 denmark %((((2f early) OR (((20 early) OR (10 early))))) OR (21 early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %2 foreign relations %2 denmark %((((2f early) or (((20 early) OR (10 early))))) or (21 early)) works to 1800%22*".