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 xrd algorithm" » "elemental iron algorithm" (Expand Search), "elemental rl algorithm" (Expand Search), "elemental wsd algorithm" (Expand Search), "elemental erf algorithm" (Expand Search)
"elemental rf algorithm" » "elemental iron algorithm" (Expand Search), "elemental _ algorithm" (Expand Search), "elemental em algorithm" (Expand Search), "elemental ii algorithm" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("elemental xrd algorithm") OR ("elemental rf algorithm"))) OR ("element matching algorithm"))~.
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• Adding a wildcard symbol may retrieve word variants: (((("elemental xrd algorithm") OR ("elemental rf algorithm"))) OR ("element matching algorithm"))*.