Perhaps you should try some spelling variations:
"element matching algorithm" » "element sampling algorithm" (Expand Search), "element tracking algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "employment matching algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"element mining algorithm" » "element learning algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "element bonding algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"present model algorithm" » "present novel algorithm" (Expand Search), "present forest algorithm" (Expand Search), "element model algorithm" (Expand Search), "rodent model algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("present model algorithm") OR ((("element matching algorithm") OR ("element mining algorithm"))))~.
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• Removing quotes may allow a broader search: (( present model algorithm ) OR ((( element matching algorithm ) OR ( element mining algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("present model algorithm") OR ((("element matching algorithm") OR ("element mining algorithm"))))*.