Perhaps you should try some spelling variations:
"a modeling algorithm" » "a scheduling algorithm" (Expand Search), "_ modeling algorithm" (Expand Search)
"spatial clustering algorithm" » "data clustering algorithm" (Expand Search)
"settlement data algorithm" » "settlement jaya algorithm" (Expand Search), "settlement deer algorithm" (Expand Search)

Try widening your search to All Fields.

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