Perhaps you should try some spelling variations:
"current learning algorithms" » "curve learning algorithms" (Expand Search), "student learning algorithms" (Expand Search), "context learning algorithms" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"elements ppo algorithm" » "elements pso algorithm" (Expand Search), "elements two algorithms" (Expand Search), "elements _ algorithm" (Expand Search), "elements ppm algorithm" (Expand Search), "elements upon 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: (("elements ppo algorithm") OR ((("current learning algorithms") OR ("neural coding algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements ppo algorithm\") OR (((\"current learning algorithms\") OR (\"neural coding algorithm\"))))".
• Removing quotes may allow a broader search: (( elements ppo algorithm ) OR ((( current learning algorithms ) OR ( neural coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements ppo algorithm") OR ((("current learning algorithms") OR ("neural coding algorithm"))))*.