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 zinc algorithm" » "elemental ii algorithm" (Expand Search), "elemental cnn algorithm" (Expand Search), "elemental iii algorithm" (Expand Search)
"elements upon algorithm" » "elements ppo algorithm" (Expand Search), "elements fusion algorithm" (Expand Search), "elements pso algorithm" (Expand Search), "elements ppm algorithm" (Expand Search)

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