Perhaps you should try some spelling variations:
22great britain » great britain, xgreat britain, zgreat britain
2f history » imf history, etf history, ref history
22 george » 22d george, 12 george, 26 george
2.1 early » 1.1 early
21 early » 1.1 early
11 early » 1791 early, 7 early, 8 early
2c 1727 » 29 1727, 28 1727, 22 1727

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 history %22 george iii%2c 1727-1760 %((((21 early) OR (2.1 early))) OR (((11 early) OR (5 early)))) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %2f history %22 george iii%2c 1727-1760 %((((21 early) OR (2.1 early))) or (((11 early) or (5 early)))) works to 1800%22*".