Perhaps you should try some spelling variations:
"spatial modeling algorithm" » "spatial making algorithm" (Expand Search)
"element tree algorithms" » "element three algorithms" (Expand Search), "element art algorithms" (Expand Search), "element two algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ore algorithms" (Expand Search)
"movement data algorithm" » "movement data algorithms" (Expand Search), "movement update algorithm" (Expand Search), "movement 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 modeling algorithm") OR ((("movement data algorithm") OR ("element tree algorithms"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"spatial modeling algorithm\") OR (((\"movement data algorithm\") OR (\"element tree algorithms\"))))".
• Removing quotes may allow a broader search: (( spatial modeling algorithm ) OR ((( movement data algorithm ) OR ( element tree algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("spatial modeling algorithm") OR ((("movement data algorithm") OR ("element tree algorithms"))))*.