Perhaps you should try some spelling variations:
krebsforschung die » krebsforschung _, krebsforschung und, krebsforschung heute
22recent results » recent results, recent result, recents results
present results » recent results, treatment results
2c fortschritte » 2 fortschritte, 23 fortschritte, c fortschritte
les recherches » des recherches, de recherches
recherches sur » recherche sur
les cancer » les cancers, lines cancer, does cancer
dans » das, dass

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22recent results) OR (present results)) in cancer research%2c fortschritte der krebsforschung die%c3%ans dans les recherches sur les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %((22recent results) OR (present results)) in cancer research%2c fortschritte der krebsforschung die%c3%ans dans les recherches sur les cancer%22*.