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 tree algorithms" » "element three algorithms" (Expand Search), "element art algorithms" (Expand Search), "element two algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ore algorithms" (Expand Search)
"elements upon algorithm" » "elements ppo algorithm" (Expand Search), "elements fusion algorithm" (Expand Search), "elements pso algorithm" (Expand Search), "elements ppm algorithm" (Expand Search), "elements uce algorithm" (Expand Search), "complements upon algorithm" (Expand Search)

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