Perhaps you should try some spelling variations:
xgreat britain » great britain, zgreat britain, great brittain
23 foreign » 3 foreign, 2 foreign, 13 foreign
2f denmark » 2 denmark, 22 denmark, 23 denmark
ef early » sf early, self early, ear early
21 early » 2.1 early, 11 early, 1.1 early
f early » sf early, 7 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: %xgreat britain %23 foreign relations %2f denmark %((((f early) OR (ef early))) OR (((21 early) OR (1 early)))) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%xgreat britain %23 foreign relations %2f denmark %((((f early) OR (ef early))) or (((21 early) or (1 early)))) works to 1800%22*".