Perhaps you should try some spelling variations:
"elements learning algorithm" » "elements learning algorithms" (Expand Search), "students learning algorithm" (Expand Search), "elements during algorithm" (Expand Search)
"genes routing algorithm" » "genes modeling algorithm" (Expand Search), "genes finding algorithm" (Expand Search), "genes making algorithm" (Expand Search), "genes using algorithm" (Expand Search), "genes during algorithm" (Expand Search), "genes regulating algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("genes routing algorithm") OR ((("elements learning algorithm") OR ("neural coding algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"genes routing algorithm\") OR (((\"elements learning algorithm\") OR (\"neural coding algorithm\"))))".
• Removing quotes may allow a broader search: (( genes routing algorithm ) OR ((( elements learning algorithm ) OR ( neural coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("genes routing algorithm") OR ((("elements learning algorithm") OR ("neural coding algorithm"))))*.