Perhaps you should try some spelling variations:
"complement system algorithm" » "component system algorithm" (Expand Search), "complex system algorithm" (Expand Search), "complement custom algorithm" (Expand Search), "complement sssgm algorithm" (Expand Search), "complement systematic algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"elements best algorithm" » "elements forest algorithm" (Expand Search), "elements based algorithm" (Expand Search), "elements new algorithm" (Expand Search), "elements res algorithm" (Expand Search), "elements b algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("elements best algorithm") OR ("complement system algorithm"))) OR ("neural coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements best algorithm\") OR (\"complement system algorithm\"))) OR (\"neural coding algorithm\"))".
• Removing quotes may allow a broader search: (((( elements best algorithm ) OR ( complement system algorithm ))) OR ( neural coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elements best algorithm") OR ("complement system algorithm"))) OR ("neural coding algorithm"))*.