Perhaps you should try some spelling variations:
krebsforschung und » krebsforschung _, krebsforschung die, krebsforschung heute
22recent results » recent results, present results, recents results
2 fortschritte » 23 fortschritte, 24 fortschritte, 25 fortschritte
les recherches » des recherches
recent result » recent results, recents results, resent results
de recherches » des recherches, de recherche
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) OR (recent result)) in cancer research%2 fortschritte der krebsforschung und%c3%a8s dans ((les recherches) OR (de recherches)) sur les cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22recent results) OR (recent result)) in cancer research%2 fortschritte der krebsforschung und%c3%a8s dans ((les recherches) or (de recherches)) sur les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %((22recent results) OR (recent result)) in cancer research%2 fortschritte der krebsforschung und%c3%a8s dans ((les recherches) or (de recherches)) sur les cancer%22*.