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