Perhaps you should try some spelling variations:
epidemiologists » epidemiological, epidemiologie, epidemiologic
epistemologische » epistemological, epidemiologische, epistemologie
epistemologies » epistemological, epistemology

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: ( (epidemiologists OR epistemologische) OR epistemologies ).
• Adding a wildcard symbol may retrieve word variants: ( (epidemiologists or epistemologische) or epistemologies )*.