Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung der, krebsforschung uber
krebsforschung das » krebsforschung die, krebsforschung der, krebsforschung sakk
3.3 fortschritte » 23 fortschritte, 35 fortschritte, die fortschritte
22recent results » recent results, present results, recents results
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
recent result » recent results, recents results, resent results
le cancer » e cancer, male cancer, pre cancer
a8s dans » ans dans, arts dans, ames dans

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) OR (recent result)) in cancer research%((2c fortschritte) OR (3.3 fortschritte)) der ((krebsforschung progr) OR (krebsforschung das))%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: "%((22recent results) OR (recent result)) in cancer research%((2c fortschritte) or (3.3 fortschritte)) der ((krebsforschung progr) or (krebsforschung das))%c3%a8s dans les ((recherches sur) or (recherche sur)) le cancer%22".
• Adding a wildcard symbol may retrieve word variants: %((22recent results) OR (recent result)) in cancer research%((2c fortschritte) or (3.3 fortschritte)) der ((krebsforschung progr) or (krebsforschung das))%c3%a8s dans les ((recherches sur) or (recherche sur)) le cancer%22*.