Perhaps you should try some spelling variations:
"element mapping algorithm" » "element sampling algorithm" (Expand Search), "element matching algorithm" (Expand Search), "element mining algorithm" (Expand Search), "elemental mapping algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"element means algorithm" » "element search algorithm" (Expand Search), "element mesh algorithm" (Expand Search)
"elemental pso algorithm" » "elemental iron algorithm" (Expand Search), "elemental xrd algorithm" (Expand Search), "elemental two algorithms" (Expand Search), "elemental _ algorithm" (Expand Search), "elemental new 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: (("elemental pso algorithm") OR ((("element mapping algorithm") OR ("element means algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elemental pso algorithm\") OR (((\"element mapping algorithm\") OR (\"element means algorithm\"))))".
• Removing quotes may allow a broader search: (( elemental pso algorithm ) OR ((( element mapping algorithm ) OR ( element means algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elemental pso algorithm") OR ((("element mapping algorithm") OR ("element means algorithm"))))*.