Perhaps you should try some spelling variations:
22great britain » great britain, xgreat britain, zgreat britain
ref history » reef history, brief history, bief history
2f george » 2 george, 22 george, 29 george
26 george » 36 george, 1 george, 4 george
2f early » 20 early, ef early, f early
21 early » 2.1 early, 1 early, 11 early
2c 1727 » 28 1727, 22 1727, 2 1727
29 1727 » 29 1725

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 %ref history %((2f george) OR (26 george)) iii%((2c 1727) OR (29 1727))-1760 %((2f early) OR (21 early)) works to 1800%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %ref history %((2f george) OR (26 george)) iii%((2c 1727) or (29 1727))-1760 %((2f early) or (21 early)) works to 1800%22*".