Perhaps you should try some spelling variations:
materiam medicam » materia medica, materiae medicae, material medium
material medica » materia medica, materiae medicae, maternal medical
material media » materia medica, material model

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: ((((material medica) OR (materiam medicam))) OR (material media)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((material medica) OR (materiam medicam))) or (material media))".
• Adding a wildcard symbol may retrieve word variants: ((((material medica) OR (materiam medicam))) or (material media))*.