Perhaps you should try some spelling variations:
1720 early » 1727 early, 1770 early, 1722 early
2f france » 2 france, 27 france, 20 france
2f early » 24 early, 20 early, 22 early
21 early » 2.1 early, 1 early, 11 early
21 law » 11 law
21 low » 11 low

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 %((21 law) OR (21 low)) AND legislation %2f france %((((2f early) OR (21 early))) OR (((1720 early) OR (1820 early)))) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22coinage %((21 law) or (21 low)) and legislation %2f france %((((2f early) OR (21 early))) or (((1720 early) or (1820 early)))) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22coinage %((21 law) or (21 low)) and legislation %2f france %((((2f early) OR (21 early))) or (((1720 early) or (1820 early)))) works to 1800%22*.