Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung vom, krebsforschung zur
krebsforschung uber » krebsforschung die, krebsforschung und, krebsforschung beim
krebsforschung der » krebsforschung die, krebsforschung das, krebsforschung zur
22recent results » recent results, present results, recent result
2c fortschritte » 2 fortschritte, 23 fortschritte, c fortschritte
le cancer » e cancer, male cancer, pre cancer
a8s dans » ans dans, ames 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: %22recent results in cancer research%2c fortschritte der ((krebsforschung progr) OR (((krebsforschung der) OR (krebsforschung uber))))%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 in cancer research%2c fortschritte der ((krebsforschung progr) or (((krebsforschung der) OR (krebsforschung uber))))%c3%a8s dans les ((recherches sur) or (recherche sur)) le cancer%22".
• Adding a wildcard symbol may retrieve word variants: %22recent results in cancer research%2c fortschritte der ((krebsforschung progr) or (((krebsforschung der) OR (krebsforschung uber))))%c3%a8s dans les ((recherches sur) or (recherche sur)) le cancer%22*.