Perhaps you should try some spelling variations:
"joint modeling algorithm" » "joint making algorithm" (Expand Search), "joint model algorithm" (Expand Search)
"data clustering algorithm" » "deep clustering algorithm" (Expand Search), "spatial clustering algorithm" (Expand Search), "dbscan clustering algorithm" (Expand Search)
"element data algorithm" » "element data algorithms" (Expand Search), "element update algorithm" (Expand Search), "element atlas algorithm" (Expand Search), "settlement data algorithm" (Expand Search), "relevant data algorithm" (Expand Search), "movement data algorithm" (Expand Search)

Try widening your search to All Fields.

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