Perhaps you should try some spelling variations:
"complex system algorithm" » "complex custom algorithm" (Expand Search), "complex sssgm algorithm" (Expand Search), "complex systematic algorithm" (Expand Search), "complex systems algorithm" (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)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"complex system algorithm\") OR (\"elements ppo algorithm\"))) OR (\"neural coding algorithm\"))~".
• Removing quotes may allow a broader search: (((( complex system algorithm ) OR ( elements ppo algorithm ))) OR ( neural coding algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("complex system algorithm") OR ("elements ppo algorithm"))) OR ("neural coding algorithm"))*.