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 method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"elements uce algorithms" » "elements mcem algorithms" (Expand Search), "elements de algorithms" (Expand Search), "elements five algorithms" (Expand Search), "elements ices algorithms" (Expand Search), "elements fe algorithms" (Expand Search), "elements ree algorithms" (Expand Search)

Try widening your search to All Fields.

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