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

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("neurons model artificial neural network") OR ("neural real artificial neural network"))~.
• Removing quotes may allow a broader search: (( neurons model artificial neural network ) or ( neural real artificial neural network ))~.
• Adding a wildcard symbol may retrieve word variants: (("neurons model artificial neural network") or ("neural real artificial neural network"))*.