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

Try widening your search to All Fields.

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

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