Perhaps you should try some spelling variations:
krebsforschung die » krebsforschung _, krebsforschung und, krebsforschung heute
22recent results » recent results, present results, recent result
2c fortschritte » 23 fortschritte, 24 fortschritte, c fortschritte
25 fortschritte » 5 fortschritte, 23 fortschritte, 24 fortschritte
2 fortschritte » 23 fortschritte, 24 fortschritte, 5 fortschritte
les cancer » les cancers, lines cancer, does cancer
dans » das, dass

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 (((2 fortschritte) OR (25 fortschritte)))) der krebsforschung die%c3%ans 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 in cancer research%((2c fortschritte) or (((2 fortschritte) OR (25 fortschritte)))) der krebsforschung die%c3%ans dans les ((recherches sur) or (recherche sur)) les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %22recent results in cancer research%((2c fortschritte) or (((2 fortschritte) OR (25 fortschritte)))) der krebsforschung die%c3%ans dans les ((recherches sur) or (recherche sur)) les cancer%22*.