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