Perhaps you should try some spelling variations:
"motor neuroe disease" » "motor neuro disease"
"motor neuronal disease" » "motor neural disease", "motor neutronal disease", "motor neuroal disease"
"motor neurons disease" » "motor neutrons disease", "motor neuros disease"
"motor neuron disease" » "motor neutron disease", "motor neuro 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 neuroe disease") or ("motor neurons disease"))) or ("motor neuronal disease"))) or ("motor neuron disease"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("motor neuroe disease") OR ("motor neurons disease"))) OR ("motor neuronal disease"))) OR ("motor neuron disease")).
• Removing quotes may allow a broader search: (((((( motor neuroe disease ) or ( motor neurons disease ))) or ( motor neuronal disease ))) or ( motor neuron disease )).
• Adding a wildcard symbol may retrieve word variants: (((((("motor neuroe disease") or ("motor neurons disease"))) or ("motor neuronal disease"))) or ("motor neuron disease"))*.