Perhaps you should try some spelling variations:
zgreat britain » great britain, xgreat britain, great brittain
2f foreign » 2 foreign, 23 foreign, 24 foreign
13 denmark » 3 denmark, 1 denmark, _ denmark
2 denmark » _ denmark, 5 denmark, 4 denmark
2f early » 24 early, 20 early, 21 early
ef early » f early, sf early, self 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: %zgreat britain %2f foreign relations %((2 denmark) OR (13 denmark)) %((2f early) OR (ef early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%zgreat britain %2f foreign relations %((2 denmark) or (13 denmark)) %((2f early) OR (ef early)) works to 1800%22*".