Perhaps you should try some spelling variations:
"neurons model artificial neural networks" » "neurons femoral artificial neural networks", "neurons real artificial neural networks", "neuron model artificial neural networks", "neural model artificial neural networks"
"neutron star artificial neural network" » "neutron can artificial neural network", "neutron real artificial neural network", "neutron toward artificial neural network"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("neutron star artificial neural network") or ("neurons model artificial neural networks"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("neutron star artificial neural network") OR ("neurons model artificial neural networks"))*.
• Removing quotes may allow a broader search: (( neutron star artificial neural network ) or ( neurons model artificial neural networks ))*.