Perhaps you should try some spelling variations:
krebsforschung uber » krebsforschung die, krebsforschung und, grossforschung uber
krebsforschung der » krebsforschung die, krebsforschung das, krebsforschung zur
present results » recent results, treatment results
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
les recherches » des recherches
de recherches » des recherches, de recherche
lines cancer » linear cancer, linked cancer, lungs cancer
sur lines » spur lines, four lines, hour lines
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: %present results in cancer research%2c fortschritte der ((krebsforschung der) OR (krebsforschung uber))%c3%a8s dans ((les recherches) OR (de recherches)) sur lines cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%present results in cancer research%2c fortschritte der ((krebsforschung der) OR (krebsforschung uber))%c3%a8s dans ((les recherches) or (de recherches)) sur lines cancer%22".
• Adding a wildcard symbol may retrieve word variants: %present results in cancer research%2c fortschritte der ((krebsforschung der) OR (krebsforschung uber))%c3%a8s dans ((les recherches) or (de recherches)) sur lines cancer%22*.