Perhaps you should try some spelling variations:
"new model artificial neural network" » "new femoral artificial neural network", "new real artificial neural network", "new model artificial neural networks"
"normal model artificial neural network" » "normal femoral artificial neural network", "normal real artificial neural network", "normal model artificial neural networks", "neural model artificial neural network", "novel model 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: (("new model artificial neural network") OR ("normal model artificial neural network"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"new model artificial neural network\") OR (\"normal model artificial neural network\"))".
• Removing quotes may allow a broader search: (( new model artificial neural network ) OR ( normal model artificial neural network )).
• Adding a wildcard symbol may retrieve word variants: (("new model artificial neural network") OR ("normal model artificial neural network"))*.