Perhaps you should try some spelling variations:
"motor neuronale disease" » "motor neuronal disease", "motor neutronale disease", "motor neuroale disease", "motor neuronalale disease"
"motor neuron disease" » "motor neutron disease", "motor neuro disease", "motor neuronal disease"
"motor neurons disease" » "motor neutrons disease", "motor neuros disease", "motor neuronals disease", "motor neuronal disease"
"motor neutrons disease" » "motor neutron disease", "motor neutrinos disease", "motor neutrino disease"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("motor neuronale disease") or ("motor neuron disease"))) or ((("motor neurons disease") or ("motor neutrons disease"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("motor neuronale disease") OR ("motor neuron disease"))) OR ((("motor neurons disease") OR ("motor neutrons disease")))).
• Removing quotes may allow a broader search: (((( motor neuronale disease ) or ( motor neuron disease ))) or ((( motor neurons disease ) or ( motor neutrons disease )))).
• Adding a wildcard symbol may retrieve word variants: (((("motor neuronale disease") or ("motor neuron disease"))) or ((("motor neurons disease") or ("motor neutrons disease"))))*.