Perhaps you should try some spelling variations:
tcm prescriptions » tcm prescription, some prescriptions, test prescriptions
2c prescriptions » _ prescriptions, 2 prescription, 21 prescription
20 formulae » 10 formulae, 2 formulae, 20 formula
25 receipts » 5 receipts, c receipts, 25 recipes
21 early » 2.1 early, 1 early, 11 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 %20 formulae%((_ receipts) OR (25 receipts))%((2c prescriptions) OR (tcm prescriptions)) %21 early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %20 formulae%((_ receipts) or (25 receipts))%((2c prescriptions) or (tcm prescriptions)) %21 early works to 1800%22*.