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