Perhaps you should try some spelling variations:
2c prescriptions » tcm prescriptions, _ prescriptions, 2 prescription
2f formulae » 20 formulae, dnf formulae, 2.8 formulae
25 receipts » 5 receipts, _ receipts, c receipts
2 formulae » 20 formulae, _ formulae, 2 formulas
2f early » 20 early, 21 early, 22 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 (2 formulae))%25 receipts%2c prescriptions %2f early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %((2f formulae) or (2 formulae))%25 receipts%2c prescriptions %2f early works to 1800%22*.