Perhaps you should try some spelling variations:
"settlement data algorithm" » "settlement jaya algorithm" (Expand Search), "settlement deer algorithm" (Expand Search)
"element mesh algorithm" » "element deer algorithm" (Expand Search), "element search algorithm" (Expand Search), "elements mesh algorithm" (Expand Search)
"element tracking algorithm" » "elements tracking algorithm" (Expand Search), "element training algorithm" (Expand Search), "element taking 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 tracking algorithm") OR ((("settlement data algorithm") OR ("element mesh algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element tracking algorithm\") OR (((\"settlement data algorithm\") OR (\"element mesh algorithm\"))))".
• Removing quotes may allow a broader search: (( element tracking algorithm ) OR ((( settlement data algorithm ) OR ( element mesh algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element tracking algorithm") OR ((("settlement data algorithm") OR ("element mesh algorithm"))))*.