Perhaps you should try some spelling variations:
2c prescriptions » tcm prescriptions, _ prescriptions, 2 prescription
2 formulae » 20 formulae, _ formulae, 2 formulas
25 formula » 5 formula, _ formula, a formula
c receipts » _ receipts, new receipts, all receipts
2 formula » 2 formulas, c formula, 5 formula
ef early » f early, sf early, self early
20 early » 10 early, 1820 early, 1720 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 formulae) OR (((25 formula) OR (2 formula))))%c receipts%2c prescriptions %((ef early) OR (20 early)) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22medicine %((2 formulae) or (((25 formula) OR (2 formula))))%c receipts%2c prescriptions %((ef early) or (20 early)) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %22medicine %((2 formulae) or (((25 formula) OR (2 formula))))%c receipts%2c prescriptions %((ef early) or (20 early)) works to 1800%22*.