Perhaps you should try some spelling variations:
"elements mining algorithm" » "elements finding algorithm" (Expand Search), "elements making algorithm" (Expand Search), "elements training algorithms" (Expand Search), "elements during algorithm" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method algorithm" (Expand Search), "elements mges algorithm" (Expand Search), "element te algorithm" (Expand Search)
"element cnn algorithm" » "element mean algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii 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 cnn algorithm") OR ("element mesh algorithm"))) OR ("elements mining algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element cnn algorithm\") OR (\"element mesh algorithm\"))) OR (\"elements mining algorithm\"))".
• Removing quotes may allow a broader search: (((( element cnn algorithm ) OR ( element mesh algorithm ))) OR ( elements mining algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element cnn algorithm") OR ("element mesh algorithm"))) OR ("elements mining algorithm"))*.