Perhaps you should try some spelling variations:
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural colony algorithm" (Expand Search), "neural scheduling algorithm" (Expand Search)
"element art algorithms" » "element _ algorithms" (Expand Search), "element rd algorithm" (Expand Search), "elements art algorithms" (Expand Search)
"complements ppo algorithm" » "complements rd algorithm" (Expand Search), "complement ppo algorithm" (Expand Search), "complemented ppo algorithm" (Expand Search), "implements ppo 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 art algorithms") OR ("complements ppo algorithm"))) OR ("neural coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element art algorithms\") OR (\"complements ppo algorithm\"))) OR (\"neural coding algorithm\"))".
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• Adding a wildcard symbol may retrieve word variants: (((("element art algorithms") OR ("complements ppo algorithm"))) OR ("neural coding algorithm"))*.