Perhaps you should try some spelling variations:
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
recent result » recents results, resent results, present results
les cancer » les cancers, lines cancer, does cancer
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: %((22((recent result) OR (recent results))s) OR (((recent result) OR (recent results)))) in cancer research%2c fortschritte der krebsforschung heute%c3%a8s dans les ((recherches sur) OR (recherche sur)) les cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22((recent result) OR (recent results))s) or (((recent result) OR (recent results)))) in cancer research%2c fortschritte der krebsforschung heute%c3%a8s dans les ((recherches sur) or (recherche sur)) les cancer%22".
• Adding a wildcard symbol may retrieve word variants: %((22((recent result) OR (recent results))s) or (((recent result) OR (recent results)))) in cancer research%2c fortschritte der krebsforschung heute%c3%a8s dans les ((recherches sur) or (recherche sur)) les cancer%22*.