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 study algorithm" » "element wsindy algorithm" (Expand Search), "element td3 algorithm" (Expand Search), "element seu algorithm" (Expand Search), "relevant study algorithm" (Expand Search), "present study algorithm" (Expand Search), "recent study algorithm" (Expand Search)
"element rf algorithm" » "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element art algorithms" (Expand Search), "element ore algorithm" (Expand Search), "element ree algorithm" (Expand Search)

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