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)
"elements based algorithm" » "experiments based algorithm" (Expand Search), "elements related 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 ("elements based algorithm"))) OR ("element mapping algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elemental pso algorithm\") OR (\"elements based algorithm\"))) OR (\"element mapping algorithm\"))".
• Removing quotes may allow a broader search: (((( elemental pso algorithm ) OR ( elements based algorithm ))) OR ( element mapping algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elemental pso algorithm") OR ("elements based algorithm"))) OR ("element mapping algorithm"))*.