Perhaps you should try some spelling variations:
"client sampling algorithm" » "client making algorithm" (Expand Search), "client modeling algorithm" (Expand Search), "client mining algorithm" (Expand Search)
"element forest algorithm" » "element ore algorithm" (Expand Search)
"elements new algorithm" » "elements novel algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements ii algorithm" (Expand Search), "elements fe algorithm" (Expand Search), "elements mges 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 new algorithm") OR ((("client sampling algorithm") OR ("element forest algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements new algorithm\") OR (((\"client sampling algorithm\") OR (\"element forest algorithm\"))))".
• Removing quotes may allow a broader search: (( elements new algorithm ) OR ((( client sampling algorithm ) OR ( element forest algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements new algorithm") OR ((("client sampling algorithm") OR ("element forest algorithm"))))*.