Perhaps you should try some spelling variations:
"element matching algorithm" » "element mining algorithm" (Expand Search), "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)
"elemental iron algorithm" » "elemental ii algorithm" (Expand Search), "elemental cnn algorithm" (Expand Search), "elemental rf algorithm" (Expand Search)
"elements pso algorithm" » "elements two algorithms" (Expand Search), "elements _ algorithm" (Expand Search), "elements new algorithm" (Expand Search), "elements ppm algorithm" (Expand Search), "elements upon algorithm" (Expand Search)

Try widening your search to All Fields.

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