Perhaps you should try some spelling variations:
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
recent result » recent results, recents results, resent results
les cancers » liver cancers, neck cancers, lung cancers
les cancer » lines cancer, does cancer, gets cancer
dans » das, dass

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 heute%c3%ans dans les ((recherches sur) OR (recherche sur)) ((les cancer) OR (les cancers))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%recent result in cancer research%2c fortschritte der krebsforschung heute%c3%ans dans les ((recherches sur) or (recherche sur)) ((les cancer) OR (les cancers))%22".
• Adding a wildcard symbol may retrieve word variants: %recent result in cancer research%2c fortschritte der krebsforschung heute%c3%ans dans les ((recherches sur) or (recherche sur)) ((les cancer) OR (les cancers))%22*.