Perhaps you should try some spelling variations:
"elements mapping algorithm" » "elements making algorithm" (Expand Search), "elements learning algorithm" (Expand Search), "elements modeling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "elemental mapping algorithm" (Expand Search), "elements during algorithm" (Expand Search)
"element mining algorithm" » "element finding algorithm" (Expand Search), "element making algorithm" (Expand Search), "element training algorithms" (Expand Search), "element mapping algorithm" (Expand Search), "element bonding algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"element means algorithm" » "element search algorithm" (Expand Search), "element mesh algorithm" (Expand Search)

Try widening your search to All Fields.

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