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)
"relevant data algorithm" » "relevant data algorithms" (Expand Search), "relevant update algorithm" (Expand Search), "relevant each algorithm" (Expand Search)
"elemental cnn algorithm" » "elemental iron algorithm" (Expand Search), "elemental zinc algorithm" (Expand Search), "elemental xrd algorithm" (Expand Search), "elemental _ algorithm" (Expand Search), "elemental new algorithm" (Expand Search), "elemental em algorithm" (Expand Search)

Try widening your search to All Fields.

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