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