Perhaps you should try some spelling variations:
recherches sur » recherche sur
de recherches » des recherches, de recherche
linear cancer » lines cancer, linear channel, linear concept
progres dans » progres des
progres de » progres des
sur linear » fur linear, our linear, super linear

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 ((progres dans) OR (progres de)) de recherches sur linear cancer".
• Adding a wildcard symbol may retrieve word variants: recent results in cancer research, fortschritte der krebsforschung ((progres dans) OR (progres de)) de recherches sur linear cancer*.