Perhaps you should try some spelling variations:
krebsforschung progr » krebsforschung from, krebsforschung uber, krebsforschung vom
krebsforschung der » krebsforschung uber, krebsforschung die, krebsforschung das
present results » treatment results
2c fortschritte » 23 fortschritte, 24 fortschritte, 25 fortschritte
2 fortschritte » 23 fortschritte, 24 fortschritte, 25 fortschritte
bases dans » base dans, causes dans, masses dans
le cancer » e cancer, male cancer, pre cancer

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