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
base dans » passe dans, base des, base data
le cancer » e cancer, male cancer, pre cancer
bas dans » pas dans, bases dans, ans dans
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%2c fortschritte der ((krebsforschung progr) OR (krebsforschung der))%c3%((a8s dans) OR (((bas dans) OR (base dans)))) les ((recherches sur) OR (recherche sur)) le 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 (((bas dans) OR (base dans)))) les ((recherches sur) or (recherche sur)) le 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 (((bas dans) OR (base dans)))) les ((recherches sur) or (recherche sur)) le cancer%22*.