Perhaps you should try some spelling variations:
"experiments also algorithm" » "experimental _ algorithm" (Expand Search), "experiments carlo algorithm" (Expand Search)
"levels using algorithms" » "levels cosine algorithm" (Expand Search), "cells using algorithms" (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.

You may be able to get more results by adjusting your search query.

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