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)
"alignment between algorithm" » "agreement between algorithm" (Expand Search), "alignment network algorithm" (Expand Search), "alignment leiden algorithm" (Expand Search), "alignment retinex algorithm" (Expand Search)
"element de algorithms" » "element mdem algorithms" (Expand Search), "element ml algorithms" (Expand Search), "element _ algorithms" (Expand Search), "element te algorithms" (Expand Search), "elements fe algorithms" (Expand Search), "element fbe algorithms" (Expand Search)

Try widening your search to All Fields.

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