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
spur lines » spur eines, spur einer, hour lines
sur lines » hour lines, sur lignee, your 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: %recent results in cancer research%2c fortschritte der krebsforschung der%c3%a8s dans les recherches ((((sur lines) OR (spur lines))) OR (four lines)) cancer%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%recent results in cancer research%2c fortschritte der krebsforschung der%c3%a8s dans les recherches ((((sur lines) OR (spur 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%a8s dans les recherches ((((sur lines) OR (spur lines))) or (four lines)) cancer%22*.