Perhaps you should try some spelling variations:
great britains » great britain's, great brittain, great britian
2f foreign » 2 foreign, 23 foreign, 24 foreign
2 denmark » _ denmark, 4 denmark, 3 denmark
5 denmark » _ denmark
2f early » 24 early, 20 early, 22 early
21 early » 2.1 early, 1 early, 11 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: %((great britains) OR (great britain)) %2f foreign relations %((2 denmark) OR (5 denmark)) %((2f early) OR (21 early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((great britains) or (great britain)) %2f foreign relations %((2 denmark) OR (5 denmark)) %((2f early) or (21 early)) works to 1800%22*".