Perhaps you should try some spelling variations:
"element sampling algorithm" » "element scheduling algorithm" (Expand Search)
"elements ppo algorithm" » "elements rd algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elementi per algorithm" (Expand Search)
"elements ree algorithm" » "elements deer algorithm" (Expand Search), "elements rd algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elementi per 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 ((("element sampling algorithm") OR ("elements ree algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements ppo algorithm\") OR (((\"element sampling algorithm\") OR (\"elements ree algorithm\"))))".
• Removing quotes may allow a broader search: (( elements ppo algorithm ) OR ((( element sampling algorithm ) OR ( elements ree algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements ppo algorithm") OR ((("element sampling algorithm") OR ("elements ree algorithm"))))*.