Perhaps you should try some spelling variations:
krebsforschung die » krebsforschung _, krebsforschung und, krebsforschung heute
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
les recherches » de recherches
recent result » recent results, recents results, resent results
lines cancer » linear cancer, linked cancer, genes cancer
does cancer » modes cancer, nodes cancer, does cantor
les cancer » les cancers, cns cancer, has cancer
a8s dans » ans dans, arts dans, ames dans

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: %recent result in cancer research%2c fortschritte der krebsforschung die%c3%a8s dans ((les recherches) OR (des recherches)) sur ((((les cancer) OR (lines cancer))) OR (does cancer))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%recent result in cancer research%2c fortschritte der krebsforschung die%c3%a8s dans ((les recherches) or (des recherches)) sur ((((les cancer) OR (lines cancer))) or (does cancer))%22".
• Adding a wildcard symbol may retrieve word variants: %recent result in cancer research%2c fortschritte der krebsforschung die%c3%a8s dans ((les recherches) or (des recherches)) sur ((((les cancer) OR (lines cancer))) or (does cancer))%22*.