Perhaps you should try some spelling variations:
2c prescriptions » tcm prescriptions, _ prescriptions, 2 prescription
2f formulae » 20 formulae, dnf formulae, 2.8 formulae
20 formula » 20 formulae, 2 formula, 25 formula
2 formulae » 20 formulae, _ formulae, 2 formulas
c receipts » new receipts, all receipts, iii receipts
2f early » 20 early, 21 early, ef 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 %((2f formulae) OR (((20 formula) OR (2 formulae))))%((c receipts) OR (_ receipts))%2c prescriptions %2f early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %((2f formulae) or (((20 formula) or (2 formulae))))%((c receipts) or (_ receipts))%2c prescriptions %2f early works to 1800%22*.