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