Perhaps you should try some spelling variations:
"client sampling algorithm" » "client scheduling algorithm" (Expand Search)
"element fusion algorithm" » "element auction algorithm" (Expand Search), "element cosine algorithm" (Expand Search), "elements fusion algorithm" (Expand Search)
"element mesh algorithm" » "element deer algorithm" (Expand Search), "element search algorithm" (Expand Search), "elements mesh algorithm" (Expand Search)

Try widening your search to All Fields.

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