Perhaps you should try some spelling variations:
"experimental means algorithm" » "experimental areas algorithm" (Expand Search), "experimental methods algorithm" (Expand Search), "experimental designs algorithm" (Expand Search), "experimental search algorithm" (Expand Search)
"tests using algorithms" » "tests pacing algorithms" (Expand Search), "tests nine algorithms" (Expand Search), "tests sorting algorithms" (Expand Search), "tested using algorithms" (Expand Search), "results using algorithms" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)

Try widening your search to All Fields.

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