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 over algorithm" » "elements novel algorithm" (Expand Search), "elements other algorithms" (Expand Search), "elements new algorithm" (Expand Search), "elements under algorithm" (Expand Search), "events over algorithm" (Expand Search), "elements ree algorithm" (Expand Search)
"element erf algorithm" » "element rf algorithm" (Expand Search), "element em algorithm" (Expand Search), "element rl algorithm" (Expand Search), "element ore algorithm" (Expand Search), "element mesh algorithm" (Expand Search)

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