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 forest algorithm" » "element ore algorithm" (Expand Search)
"element fbe algorithms" » "element five algorithms" (Expand Search), "element de algorithms" (Expand Search), "element four algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element ore algorithms" (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 mapping algorithm") OR ((("element forest algorithm") OR ("element fbe algorithms"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element mapping algorithm\") OR (((\"element forest algorithm\") OR (\"element fbe algorithms\"))))".
• Removing quotes may allow a broader search: (( element mapping algorithm ) OR ((( element forest algorithm ) OR ( element fbe algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("element mapping algorithm") OR ((("element forest algorithm") OR ("element fbe algorithms"))))*.