Perhaps you should try some spelling variations:
"element means algorithm" » "element search algorithm" (Expand Search), "element mesh algorithm" (Expand Search)
"element forest algorithm" » "element ore algorithm" (Expand Search)
"element rl algorithm" » "element rl algorithms" (Expand Search), "element rf algorithm" (Expand Search), "element ml algorithms" (Expand Search), "element ree algorithm" (Expand Search), "element ore algorithm" (Expand Search), "element _ 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 forest algorithm") OR ("element rl algorithm"))) OR ("element means algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element forest algorithm\") OR (\"element rl algorithm\"))) OR (\"element means algorithm\"))".
• Removing quotes may allow a broader search: (((( element forest algorithm ) OR ( element rl algorithm ))) OR ( element means algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element forest algorithm") OR ("element rl algorithm"))) OR ("element means algorithm"))*.