Perhaps you should try some spelling variations:
"implement cascade algorithm" » "complement cascade algorithm" (Expand Search), "implement cscap algorithm" (Expand Search), "implement based algorithm" (Expand Search), "implement cosine algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"elements each algorithm" » "elements search algorithm" (Expand Search), "elements means algorithm" (Expand Search), "elements crcy algorithm" (Expand Search), "elements uce algorithm" (Expand Search), "experiments each 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 cascade algorithm") OR ("elements each algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"implement cascade algorithm\") OR (\"elements each algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( implement cascade algorithm ) OR ( elements each algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("implement cascade algorithm") OR ("elements each algorithm"))) OR ("level coding algorithm"))*.