Perhaps you should try some spelling variations:
test prescriptions » best prescriptions, test descriptions, test description
2 prescription » 12 prescription, 21 prescription, 22 prescription
2.2 receipts » 2.3 receipts, 25 receipts, 6.2 receipt
2f formulae » 2 formulae, 20 formulae, dnf formulae
2c receipts » c receipts, 25 receipts, 2.3 receipts
2f early » 24 early, 20 early, 21 early
22 early » 2 early, 12 early, 1722 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%((2c receipts) OR (2.2 receipts))%((2 prescription) OR (test prescriptions)) %((2f early) OR (22 early)) works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %2f formulae%((2c receipts) or (2.2 receipts))%((2 prescription) or (test prescriptions)) %((2f early) or (22 early)) works to 1800%22*.