Perhaps you should try some spelling variations:
"spine modeling algorithm" » "spine making algorithm" (Expand Search), "space modeling algorithm" (Expand Search), "joint modeling algorithm" (Expand Search), "panel modeling algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"element update algorithm" » "element pass algorithm" (Expand Search), "element data algorithms" (Expand Search), "element ipca algorithm" (Expand Search), "element data 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 method algorithm") OR ((("spine modeling algorithm") OR ("element update algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element method algorithm\") OR (((\"spine modeling algorithm\") OR (\"element update algorithm\"))))".
• Removing quotes may allow a broader search: (( element method algorithm ) OR ((( spine modeling algorithm ) OR ( element update algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element method algorithm") OR ((("spine modeling algorithm") OR ("element update algorithm"))))*.