Perhaps you should try some spelling variations:
"implement modeling algorithm" » "element modeling algorithm" (Expand Search), "element modelling algorithm" (Expand Search), "implement making algorithm" (Expand Search)
"element data algorithms" » "element art algorithms" (Expand Search), "element all algorithms" (Expand Search), "element both algorithms" (Expand Search), "settlement data algorithms" (Expand Search), "relevant data algorithms" (Expand Search), "movement data algorithms" (Expand Search)
"elements rf algorithm" » "elements _ algorithm" (Expand Search), "elements ii algorithm" (Expand Search), "elements art algorithms" (Expand Search), "elements ree algorithm" (Expand Search), "elements res algorithm" (Expand Search)

Try widening your search to All Fields.

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