Perhaps you should try some spelling variations:
xgreat britain » great britain, zgreat britain, great brittain
23 foreign » 3 foreign, 13 foreign, 24 foreign
2f denmark » 2 denmark, 22 denmark, 23 denmark
2 foreign » 3 foreign, 4 foreign, 5 foreign
11 early » 1 early, 1791 early, 7 early
f early » ef early, sf early, 7 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: %xgreat britain %((23 foreign) OR (2 foreign)) relations %2f denmark %((f early) OR (11 early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%xgreat britain %((23 foreign) OR (2 foreign)) relations %2f denmark %((f early) or (11 early)) works to 1800%22*".