Perhaps you should try some spelling variations:
2c prescriptions » tcm prescriptions, _ prescriptions, 2 prescription
2 formulae » 20 formulae, _ formulae, 2 formulas
20 formula » 20 formulae, 2 formula, 25 formula
c receipts » _ receipts, new receipts, all receipts
2f early » 21 early, 22 early, f early
20 early » 10 early, 1820 early, 1720 early

Try widening your search to All Fields.

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 formulae) OR (20 formula))%c receipts%2c prescriptions %((2f early) OR (20 early)) works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %((2 formulae) or (20 formula))%c receipts%2c prescriptions %((2f early) or (20 early)) works to 1800%22*.