Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung vom, krebsforschung zur
krebsforschung uber » krebsforschung die, krebsforschung und, grossforschung uber
krebsforschung der » krebsforschung die, krebsforschung das, krebsforschung zur
22recent results » recent results, present results, recent result
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
c fortschritte » 5 fortschritte, 2 fortschritte, 3 fortschritte
male cancer » care 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 in cancer research%((2c fortschritte) OR (c fortschritte)) der ((krebsforschung progr) OR (((krebsforschung der) OR (krebsforschung uber))))%c3%a8s dans les ((recherches sur) OR (recherche sur)) male cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22recent results in cancer research%((2c fortschritte) or (c fortschritte)) der ((krebsforschung progr) or (((krebsforschung der) OR (krebsforschung uber))))%c3%a8s dans les ((recherches sur) or (recherche sur)) male cancer%22".
• Adding a wildcard symbol may retrieve word variants: %22recent results in cancer research%((2c fortschritte) or (c fortschritte)) der ((krebsforschung progr) or (((krebsforschung der) OR (krebsforschung uber))))%c3%a8s dans les ((recherches sur) or (recherche sur)) male cancer%22*.