Perhaps you should try some spelling variations:
fur naturwissenschaften » der naturwissenschaften (Expand Search)
naturwissenschaften und » naturwissenschaften _ (Expand Search), naturwissenschaften dr (Expand Search), naturwissenschaften zu (Expand Search)
die literatur » der literatur (Expand Search), und literatur (Expand Search)
ns literatur » und literatur (Expand Search), der literatur (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (akademie OR akademiker) fur naturwissenschaften und ((ns literatur) OR (die literatur))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(akademie OR akademiker) fur naturwissenschaften und ((ns literatur) OR (die literatur))".
• Adding a wildcard symbol may retrieve word variants: (akademie OR akademiker) fur naturwissenschaften und ((ns literatur) OR (die literatur))*.