Perhaps you should try some spelling variations:
"levels routing algorithm" » "levels cosine algorithm" (Expand Search), "level routing algorithm" (Expand Search)
"experiments also algorithm" » "experimental _ algorithm" (Expand Search), "experiments carlo algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural colony algorithm" (Expand Search), "neural scheduling algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("experiments also algorithm") OR ("levels routing algorithm"))) OR ("neural coding algorithm"))~.
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