Perhaps you should try some spelling variations:
"element matching algorithm" » "element making algorithm" (Expand Search), "element modeling algorithm" (Expand Search), "element mining algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "employment matching algorithm" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method algorithm" (Expand Search), "elements mges algorithm" (Expand Search), "element te algorithm" (Expand Search)
"present de algorithms" » "present mdem algorithms" (Expand Search), "present ml algorithms" (Expand Search), "present _ algorithms" (Expand Search), "present day algorithms" (Expand Search), "present vs algorithms" (Expand Search)

Try widening your search to All Fields.

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