Perhaps you should try some spelling variations:
22great britain » great britain, xgreat britain, zgreat britain
2f foreign » 23 foreign, 24 foreign, 22 foreign
2f denmark » 2 denmark, 22 denmark, 23 denmark
2 foreign » 3 foreign, 4 foreign, 5 foreign
2f early » ef early, f early, sf early
20 early » 10 early, 1820 early, 1720 early
21 early » 2.1 early, 1 early, 1.1 early
11 early » 1 early, 1791 early, 5 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) OR (2 foreign)) relations %2f denmark %((((2f early) OR (20 early))) OR (((21 early) OR (11 early)))) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %((2f foreign) or (2 foreign)) relations %2f denmark %((((2f early) or (20 early))) or (((21 early) OR (11 early)))) works to 1800%22*".