Perhaps you should try some spelling variations:
krebsforschung die » krebsforschung und, krebsforschung heute
22recent results » recent results, present results, recent result
23 fortschritte » 2 fortschritte, 24 fortschritte, 25 fortschritte
2c fortschritte » 2 fortschritte, 24 fortschritte, 25 fortschritte
les recherches » de recherches
les cancer » les cancers, lines cancer, does cancer
a8s dans » ans dans, arts dans, ames dans

Try widening your search to All Fields.

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: %22recent results in cancer research%((2c fortschritte) OR (23 fortschritte)) der ((krebsforschung die) OR (krebsforschung _))%c3%a8s dans ((les recherches) OR (des recherches)) sur les cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22recent results in cancer research%((2c fortschritte) or (23 fortschritte)) der ((krebsforschung die) or (krebsforschung _))%c3%a8s dans ((les recherches) OR (des recherches)) sur les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %22recent results in cancer research%((2c fortschritte) or (23 fortschritte)) der ((krebsforschung die) or (krebsforschung _))%c3%a8s dans ((les recherches) OR (des recherches)) sur les cancer%22*.