Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung der, krebsforschung uber
krebsforschung die » krebsforschung _, krebsforschung und, krebsforschung heute
present results » treatment results
c fortschritte » 2 fortschritte, 3 fortschritte, 4 fortschritte
5 fortschritte » ii fortschritte, die fortschritte, und fortschritte
le cancer » e cancer, male cancer, pre 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: %((recent results) OR (present results)) in cancer research%((c fortschritte) OR (5 fortschritte)) der ((krebsforschung progr) OR (krebsforschung die))%c3%a8s dans les ((recherches sur) OR (recherche sur)) le cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((recent results) or (present results)) in cancer research%((c fortschritte) OR (5 fortschritte)) der ((krebsforschung progr) or (krebsforschung die))%c3%a8s dans les ((recherches sur) or (recherche sur)) le cancer%22".
• Adding a wildcard symbol may retrieve word variants: %((recent results) or (present results)) in cancer research%((c fortschritte) OR (5 fortschritte)) der ((krebsforschung progr) or (krebsforschung die))%c3%a8s dans les ((recherches sur) or (recherche sur)) le cancer%22*.