Perhaps you should try some spelling variations:
xgreat britain » great britain, zgreat britain, great brittain
2.3 denmark » 2.4 denmark, 23 denmark, 13 denmark
2f denmark » 2 denmark, 22 denmark, 23 denmark
2 foreign » 3 foreign, 4 foreign, 5 foreign
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: %xgreat britain %2 foreign relations %((2f denmark) OR (2.3 denmark)) %((2f early) OR (ef early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%xgreat britain %2 foreign relations %((2f denmark) or (2.3 denmark)) %((2f early) OR (ef early)) works to 1800%22*".