Perhaps you should try some spelling variations:
"element sampling algorithm" » "element scheduling algorithm" (Expand Search)
"element ree algorithms" » "element _ algorithms" (Expand Search), "element rd algorithm" (Expand Search), "elementi per algorithms" (Expand Search)
"element deer algorithm" » "element search algorithm" (Expand Search), "elementi per algorithm" (Expand Search)

Try widening your search to All Fields.

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