Perhaps you should try some spelling variations:
krebsforschung die » krebsforschung _, krebsforschung heute
krebsforschung und » krebsforschung _, krebsforschung heute, praxisforschung und
22recent results » recent results, present results, recent result
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
recherches sur » recherche sur
les cancer » les cancers, lines cancer, does cancer
a8s dans » arts dans, ames dans, bas 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 der ((krebsforschung und) OR (krebsforschung die))%c3%((a8s dans) OR (ans dans)) 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 der ((krebsforschung und) OR (krebsforschung die))%c3%((a8s dans) or (ans dans)) des recherches sur les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %22recent results in cancer research%2c fortschritte der ((krebsforschung und) OR (krebsforschung die))%c3%((a8s dans) or (ans dans)) des recherches sur les cancer%22*.