Perhaps you should try some spelling variations:
22great britain » great britain, xgreat britain, zgreat britain
2f foreign » 23 foreign, 24 foreign, 22 foreign
23 denmark » 2.3 denmark, 3 denmark, 13 denmark
2 foreign » 3 foreign, 4 foreign, 5 foreign
2.1 early » 1.1 early, 11 early
2f early » 20 early, ef early, f early
21 early » 11 early, 1.1 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: %22great britain %((2f foreign) OR (2 foreign)) relations %23 denmark %((2f early) OR (((21 early) OR (2.1 early)))) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %((2f foreign) OR (2 foreign)) relations %23 denmark %((2f early) or (((21 early) or (2.1 early)))) works to 1800%22*".