Perhaps you should try some spelling variations:
"element sampling algorithm" » "element making algorithm" (Expand Search), "element modeling algorithm" (Expand Search), "element mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search), "client sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search)
"client means algorithm" » "client search algorithm" (Expand Search), "client needs algorithm" (Expand Search)
"element ree algorithm" » "element tree algorithms" (Expand Search), "element new algorithm" (Expand Search), "element rf algorithm" (Expand Search), "elements ree algorithm" (Expand Search), "elements res algorithm" (Expand Search), "element te algorithm" (Expand Search)

Try widening your search to All Fields.

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