Perhaps you should try some spelling variations:
"elements sampling algorithm" » "elements mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "client sampling algorithm" (Expand Search)
"elements best algorithm" » "elements forest algorithm" (Expand Search), "elements based algorithm" (Expand Search), "elements new algorithm" (Expand Search), "elements res algorithm" (Expand Search), "elements b algorithm" (Expand Search)
"element mesh algorithm" » "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element best algorithms" (Expand Search), "element method algorithm" (Expand Search)

Try widening your search to All Fields.

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