Perhaps you should try some spelling variations:
krebsforschung der » krebsforschung uber, krebsforschung die, krebsforschung das
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
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%c3%a8s dans ((les recherches) OR (de recherches)) four lines cancer%22.
• Adding a wildcard symbol may retrieve word variants: %present results in cancer research%2c fortschritte der krebsforschung der%c3%a8s dans ((les recherches) or (de recherches)) four lines cancer%22*.