Perhaps you should try some spelling variations:
"elemental mapping algorithm" » "elemental sampling algorithm" (Expand Search), "elemental matching algorithm" (Expand Search), "elemental mining algorithm" (Expand Search)
"elements two algorithms" » "elements _ algorithms" (Expand Search), "elements ml algorithms" (Expand Search), "elements art algorithms" (Expand Search), "elements wt algorithms" (Expand Search), "elements upon algorithms" (Expand Search)
"elements fe algorithm" » "elements new algorithm" (Expand Search), "elements de algorithms" (Expand Search), "elements seu algorithm" (Expand Search), "elements ree algorithm" (Expand Search), "elements res algorithm" (Expand Search), "elements uce 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 two algorithms") OR ("elements fe algorithm"))) OR ("elemental mapping algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements two algorithms\") OR (\"elements fe algorithm\"))) OR (\"elemental mapping algorithm\"))".
• Removing quotes may allow a broader search: (((( elements two algorithms ) OR ( elements fe algorithm ))) OR ( elemental mapping algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elements two algorithms") OR ("elements fe algorithm"))) OR ("elemental mapping algorithm"))*.