Perhaps you should try some spelling variations:
"key modeling algorithm" » "key making algorithm" (Expand Search), "fem modeling algorithm" (Expand Search), "decay modeling algorithm" (Expand Search), "best modeling algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean 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 method algorithm") OR ("element based algorithm"))) OR ("key modeling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element method algorithm\") OR (\"element based algorithm\"))) OR (\"key modeling algorithm\"))".
• Removing quotes may allow a broader search: (((( element method algorithm ) OR ( element based algorithm ))) OR ( key modeling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element method algorithm") OR ("element based algorithm"))) OR ("key modeling algorithm"))*.