Perhaps you should try some spelling variations:
"experiments using algorithms" » "experiments show algorithms" (Expand Search), "experimental testing algorithms" (Expand Search), "experiments pacing algorithms" (Expand Search), "experiments nine algorithms" (Expand Search), "experiments sorting algorithms" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using 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: "((((\"elements ppo algorithm\") OR (\"experiments using algorithms\"))) OR (\"level coding algorithm\"))~".
• Removing quotes may allow a broader search: (((( elements ppo algorithm ) OR ( experiments using algorithms ))) OR ( level coding algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("elements ppo algorithm") OR ("experiments using algorithms"))) OR ("level coding algorithm"))*.