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

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 networks") OR ("normal model artificial neural networks"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"neural model artificial neural networks\") OR (\"normal model artificial neural networks\"))".
• Removing quotes may allow a broader search: (( neural model artificial neural networks ) OR ( normal model artificial neural networks )).
• Adding a wildcard symbol may retrieve word variants: (("neural model artificial neural networks") OR ("normal model artificial neural networks"))*.