Perhaps you should try some spelling variations:
krebsforschung die » krebsforschung _, krebsforschung und, krebsforschung heute
2c fortschritte » 23 fortschritte, 24 fortschritte, 25 fortschritte
2 fortschritte » 23 fortschritte, 24 fortschritte, 25 fortschritte
les recherches » de recherches
recent result » recent results, recents results, resent results
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: %recent result in cancer research%((2c fortschritte) OR (2 fortschritte)) der krebsforschung die%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: "%recent result in cancer research%((2c fortschritte) OR (2 fortschritte)) der krebsforschung die%c3%a8s dans ((les recherches) or (des recherches)) sur les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %recent result in cancer research%((2c fortschritte) OR (2 fortschritte)) der krebsforschung die%c3%a8s dans ((les recherches) or (des recherches)) sur les cancer%22*.