Perhaps you should try some spelling variations:
"element strain algorithm" » "element scraping algorithm" (Expand Search), "element tracking algorithm" (Expand Search), "element swarm algorithm" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method algorithm" (Expand Search)
"element rf algorithm" » "element _ algorithm" (Expand Search), "element em algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element ree algorithm" (Expand Search), "element ore 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 strain algorithm") OR ((("element rf algorithm") OR ("element mesh algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element strain algorithm\") OR (((\"element rf algorithm\") OR (\"element mesh algorithm\"))))".
• Removing quotes may allow a broader search: (( element strain algorithm ) OR ((( element rf algorithm ) OR ( element mesh algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element strain algorithm") OR ((("element rf algorithm") OR ("element mesh algorithm"))))*.