Perhaps you should try some spelling variations:
tcm prescriptions » tcm prescription, some prescriptions, test prescriptions
2c prescriptions » _ prescriptions, 2 prescription, 21 prescription
2.2 receptors » 22 receptors, 4.2 receptors, 6.2 receptors
dnf formulae » dnf formulas, cdnf formulas, cnf formula
cnf formulas » _ formulas
2f early » 20 early, 21 early, ef 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 %((dnf formulae) OR (cnf formulas))%2.2 receptors%((2c prescriptions) OR (tcm prescriptions)) %2f early works to 1800%22.
• Adding a wildcard symbol may retrieve word variants: %22medicine %((dnf formulae) or (cnf formulas))%2.2 receptors%((2c prescriptions) or (tcm prescriptions)) %2f early works to 1800%22*.