Perhaps you should try some spelling variations:
171820 early » 1720 early, 1780 early, 1710 early
2010 france » 2020 france, 10 france, 100 france
20 france » 10 france, 20 fringe
30 france » 130 france, 10 france, 100 france

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: %22coinage %20 law AND legislation %((((20 france) OR (30 france))) OR (2010 france)) %((1820 early) OR (171820 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22coinage %20 law and legislation %((((20 france) OR (30 france))) or (2010 france)) %((1820 early) or (171820 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22coinage %20 law and legislation %((((20 france) OR (30 france))) or (2010 france)) %((1820 early) or (171820 early)) works to 1800%22*.