Perhaps you should try some spelling variations:
"element method algorithm" » "element mould algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"spatial mapping algorithm" » "spatial modeling algorithm" (Expand Search)
"element update algorithm" » "elements update algorithm" (Expand Search), "element updated algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("spatial mapping algorithm") OR ((("element update algorithm") OR ("element method algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"spatial mapping algorithm\") OR (((\"element update algorithm\") OR (\"element method algorithm\"))))".
• Removing quotes may allow a broader search: (( spatial mapping algorithm ) OR ((( element update algorithm ) OR ( element method algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("spatial mapping algorithm") OR ((("element update algorithm") OR ("element method algorithm"))))*.