Perhaps you should try some spelling variations:
"neural model artificial neural network" » "neural femoral artificial neural network", "neural model artificial neural networks", "neuron model artificial neural network", "nerf model artificial neural network", "normal model artificial neural network"
"nerf real artificial neural network" » "nerf can artificial neural network", "nerf femoral artificial neural network", "nerf real artificial neural networks", "nrf real 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: (("neural model artificial neural network") or ("nerf real artificial neural network"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("neural model artificial neural network") OR ("nerf real artificial neural network"))*.
• Removing quotes may allow a broader search: (( neural model artificial neural network ) or ( nerf real artificial neural network ))*.