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)
"elements ppo algorithm" » "elements rd algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elementi per algorithm" (Expand Search)
"experiment ii algorithm" » "experiment rd algorithm" (Expand Search), "experiment _ algorithms" (Expand Search), "experiments ii algorithm" (Expand Search), "experimental 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: (((("experiment ii algorithm") OR ("elements ppo algorithm"))) OR ("neural coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"experiment ii algorithm\") OR (\"elements ppo algorithm\"))) OR (\"neural coding algorithm\"))".
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• Adding a wildcard symbol may retrieve word variants: (((("experiment ii algorithm") OR ("elements ppo algorithm"))) OR ("neural coding algorithm"))*.