Perhaps you should try some spelling variations:
"spatial mapping algorithm" » "spatial making algorithm" (Expand Search), "spatial mining algorithm" (Expand Search), "spatial learning algorithm" (Expand Search), "spatial modeling algorithm" (Expand Search), "spatial planning algorithm" (Expand Search)
"element method algorithms" » "element two algorithms" (Expand Search), "element both algorithms" (Expand Search), "element other algorithms" (Expand Search)
"relevant data algorithm" » "relevant data algorithms" (Expand Search), "relevant update algorithm" (Expand Search), "relevant atlas 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: (("spatial mapping algorithm") OR ((("element method algorithms") OR ("relevant data algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"spatial mapping algorithm\") OR (((\"element method algorithms\") OR (\"relevant data algorithm\"))))".
• Removing quotes may allow a broader search: (( spatial mapping algorithm ) OR ((( element method algorithms ) OR ( relevant data algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("spatial mapping algorithm") OR ((("element method algorithms") OR ("relevant data algorithm"))))*.