Perhaps you should try some spelling variations:
zgreat britain » great brittain, great britains, great britiain
xgreat britain » great brittain, great britains, great britiain
21 politics » 2 politics, 1 politics, 11 politics
2f 1714 » 20 1714, 29 1714, 22 1714

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: %((((zgreat britain) OR (xgreat britain))) OR (great britain)) %21 politics AND government %2f 1714-1760%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((zgreat britain) OR (xgreat britain))) or (great britain)) %21 politics and government %2f 1714-1760%22".
• Adding a wildcard symbol may retrieve word variants: %((((zgreat britain) OR (xgreat britain))) or (great britain)) %21 politics and government %2f 1714-1760%22*.