Perhaps you should try some spelling variations:
"functional line artificial neural network" » "function line artificial neural network" (Expand Search), "functional life artificial neural network" (Expand Search)
"functional like artificial neural network" » "function like artificial neural network" (Expand Search), "functional life artificial neural network" (Expand Search)

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