Perhaps you should try some spelling variations:
"fluent modeling algorithm" » "fluent scheduling algorithm" (Expand Search), "agent modeling algorithm" (Expand Search), "event modeling algorithm" (Expand Search)
"relevant data algorithm" » "relevant jaya algorithm" (Expand Search), "relevant deer algorithm" (Expand Search)
"elements tree algorithms" » "elements three algorithms" (Expand Search), "elements free algorithms" (Expand Search)

Try widening your search to All Fields.

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