Perhaps you should try some spelling variations:
2 prescription » 12 prescription, 21 prescription, 22 prescription
20 formulae » 10 formulae, 20 formula, 20 formule
2 formulae » _ formulae, 2 formulas, a formulae
c receipts » new receipts, all receipts, iii receipts
2f early » 20 early, 21 early, 22 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 formulae) OR (20 formulae))%((c receipts) OR (_ receipts))%2 prescription %2f early works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22medicine %((2 formulae) or (20 formulae))%((c receipts) OR (_ receipts))%2 prescription %2f early works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22medicine %((2 formulae) or (20 formulae))%((c receipts) OR (_ receipts))%2 prescription %2f early works to 1800%22*.