Perhaps you should try some spelling variations:
materiam medicam » materia medica, material medium
materiae medicae » materia medica, regiae medicae
material medica » materia medica, maternal medical, material medium
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 (material media))) OR (materiam medicam))) OR (materiae medicae)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((material medica) OR (material media))) or (materiam medicam))) or (materiae medicae))".
• Adding a wildcard symbol may retrieve word variants: ((((((material medica) OR (material media))) or (materiam medicam))) or (materiae medicae))*.