Perhaps you should try some spelling variations:
"case modeling algorithm" » "case making algorithm" (Expand Search), "based modeling algorithm" (Expand Search), "data modeling algorithm" (Expand Search), "a modeling algorithm" (Expand Search)
"element method algorithms" » "element two algorithms" (Expand Search), "element both algorithms" (Expand Search), "element other algorithms" (Expand Search)
"relevant study algorithm" » "relevant wsindy algorithm" (Expand Search), "relevant td3 algorithm" (Expand Search), "relevant seu algorithm" (Expand Search), "relevant studies algorithm" (Expand Search), "recent study algorithm" (Expand Search)

Try widening your search to All Fields.

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