Perhaps you should try some spelling variations:
"spatial modeling algorithm" » "spatial making algorithm" (Expand Search)
"element update algorithm" » "element pass algorithm" (Expand Search), "element data algorithms" (Expand Search), "element ipca algorithm" (Expand Search), "element data algorithm" (Expand Search)
"element based algorithm" » "engagement based 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 update algorithm") OR ("element based algorithm"))) OR ("spatial modeling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element update algorithm\") OR (\"element based algorithm\"))) OR (\"spatial modeling algorithm\"))".
• Removing quotes may allow a broader search: (((( element update algorithm ) OR ( element based algorithm ))) OR ( spatial modeling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element update algorithm") OR ("element based algorithm"))) OR ("spatial modeling algorithm"))*.