Perhaps you should try some spelling variations:
2c prescriptions » tcm prescriptions, 2 prescription, 21 prescription
_ prescriptions » _ prescription, _ prescriptive
2.8 formulae » 2.9 formulae, 12.8 formulare, 18 formulae
all receipts » sale receipts, also receipts, bills receipts
20 formulae » 10 formulae, 2 formulae, 20 formula
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 %((2.8 formulae) OR (20 formulae))%all receipts%((2c prescriptions) OR (_ prescriptions)) %2f early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %((2.8 formulae) or (20 formulae))%all receipts%((2c prescriptions) or (_ prescriptions)) %2f early works to 1800%22*.