Perhaps you should try some spelling variations:
2c prescriptions » tcm prescriptions, _ prescriptions, 2 prescription
all receipts » sale receipts, also receipts, bills receipts
20 formulae » 10 formulae, 2 formulae, 20 formule
2 formulas » 3 formulas, cnf formulas
20 formula » 2 formula, 25 formula, 20 formule
2f early » 20 early, 21 early, ef early

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: %22medicine %((((2 formulas) OR (_ formulas))) OR (((20 formulae) OR (20 formula))))%all receipts%2c prescriptions %2f early works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22medicine %((((2 formulas) or (_ formulas))) or (((20 formulae) OR (20 formula))))%all receipts%2c prescriptions %2f early works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22medicine %((((2 formulas) or (_ formulas))) or (((20 formulae) OR (20 formula))))%all receipts%2c prescriptions %2f early works to 1800%22*.