Perhaps you should try some spelling variations:
"stool modeling algorithm" » "stool making algorithm" (Expand Search), "flood modeling algorithm" (Expand Search), "spatial modeling algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"element data algorithms" » "element art algorithms" (Expand Search), "element all algorithms" (Expand Search), "element both algorithms" (Expand Search), "settlement data algorithms" (Expand Search), "relevant data algorithms" (Expand Search), "movement data algorithms" (Expand Search)

Try widening your search to All Fields.

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