Perhaps you should try some spelling variations:
"client modeling algorithm" » "client making algorithm" (Expand Search), "element modeling algorithm" (Expand Search), "climate modeling algorithm" (Expand Search), "current modeling algorithm" (Expand Search)
"element based algorithm" » "engagement based algorithm" (Expand Search)
"element cnn algorithm" » "element mean algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii 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 based algorithm") OR ("element cnn algorithm"))) OR ("client modeling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element based algorithm\") OR (\"element cnn algorithm\"))) OR (\"client modeling algorithm\"))".
• Removing quotes may allow a broader search: (((( element based algorithm ) OR ( element cnn algorithm ))) OR ( client modeling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element based algorithm") OR ("element cnn algorithm"))) OR ("client modeling algorithm"))*.