Perhaps you should try some spelling variations:
zgreat britain » xgreat britain, great brittain, great britains
2f denmark » 2 denmark, 22 denmark, 23 denmark
2 foreign » 3 foreign, 4 foreign, 5 foreign
ef early » sf early, self early, ear early
11 early » 1 early, 1791 early, 5 early
f early » sf early, 5 early, 8 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) OR (great britain)) %2 foreign relations %2f denmark %((((f early) OR (ef early))) OR (11 early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((zgreat britain) or (great britain)) %2 foreign relations %2f denmark %((((f early) OR (ef early))) or (11 early)) works to 1800%22*".