Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung der, krebsforschung uber
krebsforschung das » krebsforschung die, krebsforschung der, krebsforschung sakk
23 fortschritte » 24 fortschritte, 25 fortschritte, 3 fortschritte
2c fortschritte » 24 fortschritte, 25 fortschritte, c fortschritte
2 fortschritte » 24 fortschritte, 25 fortschritte, 5 fortschritte
recent result » recent results, recents results, resent results
le cancer » male cancer, pre cancer
a8s dans » ans dans, arts dans, ames 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: %recent result in cancer research%((((2c fortschritte) OR (2 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: "%recent result in cancer research%((((2c fortschritte) OR (2 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: %recent result in cancer research%((((2c fortschritte) OR (2 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*.