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