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)
"elements over algorithms" » "elements other algorithms" (Expand Search), "elements four algorithms" (Expand Search), "elements novel algorithm" (Expand Search), "elements under algorithms" (Expand Search), "elements mges algorithms" (Expand Search), "events over algorithms" (Expand Search)
"element rf algorithm" » "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element art algorithms" (Expand Search), "element ore algorithm" (Expand Search), "element ree algorithm" (Expand Search)

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