Perhaps you should try some spelling variations:
"element sampling algorithm" » "element mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "client sampling algorithm" (Expand Search)
"elements ree algorithm" » "elements tree algorithms" (Expand Search), "elements new algorithm" (Expand Search), "elements rf algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements present algorithm" (Expand Search), "elements related algorithm" (Expand Search)
"elements em algorithm" » "elements new algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements _ algorithms" (Expand Search), "elements ppm algorithm" (Expand Search), "elements res algorithm" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("element sampling algorithm") OR ((("elements ree algorithm") OR ("elements em algorithm"))))~.
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• Removing quotes may allow a broader search: (( element sampling algorithm ) OR ((( elements ree algorithm ) OR ( elements em algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element sampling algorithm") OR ((("elements ree algorithm") OR ("elements em algorithm"))))*.