Perhaps you should try some spelling variations:
"element learning algorithm" » "element learning algorithms" (Expand Search), "excellent learning algorithm" (Expand Search), "student learning algorithm" (Expand Search), "agent learning algorithm" (Expand Search)
"element group algorithm" » "element growth algorithm" (Expand Search), "elements groups algorithm" (Expand Search), "recent group algorithm" (Expand Search), "supplement group algorithm" (Expand Search)
"elements pso algorithm" » "elements two algorithms" (Expand Search), "elements _ algorithm" (Expand Search), "elements new 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 pso algorithm") OR ("element group algorithm"))) OR ("element learning algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements pso algorithm\") OR (\"element group algorithm\"))) OR (\"element learning algorithm\"))".
• Removing quotes may allow a broader search: (((( elements pso algorithm ) OR ( element group algorithm ))) OR ( element learning algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elements pso algorithm") OR ("element group algorithm"))) OR ("element learning algorithm"))*.