Perhaps you should try some spelling variations:
"element learning algorithm" » "element learning algorithms" (Expand Search), "excellent learning algorithm" (Expand Search), "student learning algorithm" (Expand Search), "agent learning algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element modbo algorithm" (Expand Search)
"element mean algorithm" » "element means algorithm" (Expand Search), "element new algorithm" (Expand Search), "element each algorithm" (Expand Search), "element mesh algorithm" (Expand Search), "latent mean algorithm" (Expand Search), "element te algorithm" (Expand Search)

Try widening your search to All Fields.

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