Perhaps you should try some spelling variations:
krebsforschung der » krebsforschung uber, krebsforschung die, krebsforschung das
2c fortschritte » 2 fortschritte, 23 fortschritte, 24 fortschritte
les recherches » des recherches, de recherches
sur lines » spur lines, hour lines, sur lignee
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 results in cancer research%2c fortschritte der krebsforschung der%c3%ans dans les recherches ((sur lines) OR (four lines)) cancer%22.
• Adding a wildcard symbol may retrieve word variants: %recent results in cancer research%2c fortschritte der krebsforschung der%c3%ans dans les recherches ((sur lines) or (four lines)) cancer%22*.