Perhaps you should try some spelling variations:
historical materialien » historical materialist, historical material, ofhistorical materialism
historical materials » historical material, historical aerial, biological materials
"historical materialism" » "historical materiality"

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: (("historical materialism") OR ("((historical materialien) OR (historical materials))")).
• Removing quotes may allow a broader search: (( historical materialism ) or ( ((historical materialien) OR (historical materials)) )).
• Adding a wildcard symbol may retrieve word variants: (("historical materialism") or ("((historical materialien) OR (historical materials))"))*.