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