Perhaps you should try some spelling variations:
"motor neurone disease" » "motor neurons disease", "motor neuronal disease", "motor neutrone disease", "motor neuronse disease", "motor neuronale disease"
"motor neuronale disease" » "motor neuronal disease", "motor neutronale disease", "motor neuronsale disease", "motor neuronalale disease"
"motor neuronalale disease" » "motor neutronalale disease", "motor neuronsalale disease", "motor neuronalalale disease"
"motor neuron disease" » "motor neutron disease", "motor neurons disease", "motor neuronal 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 neurone disease") or ((("motor neuronale disease") OR ("motor neuronalale disease"))))) or ((("motor neuron disease") or ("motor neuro disease"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("motor neurone disease") OR ((("motor neuronale disease") OR ("motor neuronalale disease"))))) OR ((("motor neuron disease") OR ("motor neuro disease")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"motor neurone disease\") or (((\"motor neuronale disease\") OR (\"motor neuronalale disease\"))))) or (((\"motor neuron disease\") or (\"motor neuro disease\"))))".
• Removing quotes may allow a broader search: (((( motor neurone disease ) or ((( motor neuronale disease ) OR ( motor neuronalale disease ))))) or ((( motor neuron disease ) or ( motor neuro disease )))).
• Adding a wildcard symbol may retrieve word variants: (((("motor neurone disease") or ((("motor neuronale disease") OR ("motor neuronalale disease"))))) or ((("motor neuron disease") or ("motor neuro disease"))))*.