Perhaps you should try some spelling variations:
krebsforschung from » krebsforschung vom, krebsforschung beim, krebsforschung _
les recherches » des recherches
de recherches » des recherches, de recherche
lines cancer » linear cancer, linked cancer, genes cancer
from demand » from dead, from denmark, from command
spur lines » spur eines, four lines, spur einer

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "recent results in cancer research, fortschritte der krebsforschung from demand ((les recherches) OR (de recherches)) spur lines cancer".
• Adding a wildcard symbol may retrieve word variants: recent results in cancer research, fortschritte der krebsforschung from demand ((les recherches) OR (de recherches)) spur lines cancer*.