Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung der, krebsforschung uber
krebsforschung das » krebsforschung die, krebsforschung der, krebsforschung sakk
22recent results » recent results, present results, recent result
2c fortschritte » 2 fortschritte, c fortschritte, 24 fortschritte
23 fortschritte » 2 fortschritte, 3 fortschritte, 3.3 fortschritte
le cancer » male cancer, pre cancer
a8s dans » ans dans, ames dans, bas dans
e cancer » pre cancer

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 (23 fortschritte)) der ((krebsforschung progr) OR (krebsforschung das))%c3%a8s dans les ((recherches sur) OR (recherche sur)) ((le cancer) OR (e cancer))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22recent results in cancer research%((2c fortschritte) or (23 fortschritte)) der ((krebsforschung progr) or (krebsforschung das))%c3%a8s dans les ((recherches sur) or (recherche sur)) ((le cancer) OR (e cancer))%22".
• Adding a wildcard symbol may retrieve word variants: %22recent results in cancer research%((2c fortschritte) or (23 fortschritte)) der ((krebsforschung progr) or (krebsforschung das))%c3%a8s dans les ((recherches sur) or (recherche sur)) ((le cancer) OR (e cancer))%22*.