Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung der, krebsforschung uber, krebsforschung vom
krebsforschung from » krebsforschung vom, krebsforschung beim, krebsforschung _
krebsforschung das » krebsforschung die, krebsforschung der, krebsforschung sakk
23 fortschritte » 2 fortschritte, 24 fortschritte, 25 fortschritte
recent result » recent results, recents results, resent results
pre cancer » care cancer
le cancer » e cancer, male 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 result in cancer research%23 fortschritte der ((((krebsforschung progr) OR (krebsforschung from))) OR (krebsforschung das))%c3%a8s dans les ((recherches sur) OR (recherche sur)) ((le cancer) OR (pre cancer))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%recent result in cancer research%23 fortschritte der ((((krebsforschung progr) or (krebsforschung from))) or (krebsforschung das))%c3%a8s dans les ((recherches sur) or (recherche sur)) ((le cancer) OR (pre cancer))%22".
• Adding a wildcard symbol may retrieve word variants: %recent result in cancer research%23 fortschritte der ((((krebsforschung progr) or (krebsforschung from))) or (krebsforschung das))%c3%a8s dans les ((recherches sur) or (recherche sur)) ((le cancer) OR (pre cancer))%22*.