Perhaps you should try some spelling variations:
"dbscan clustering algorithm" » "data clustering algorithm" (Expand Search)
"from making algorithm" » "from cosine algorithm" (Expand Search), "from vaping algorithm" (Expand Search)
"element data algorithm" » "element jaya algorithm" (Expand Search), "element deer algorithm" (Expand Search), "elements 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: (((("dbscan clustering algorithm") OR ("from making algorithm"))) OR ("element data algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dbscan clustering algorithm\") OR (\"from making algorithm\"))) OR (\"element data algorithm\"))".
• Removing quotes may allow a broader search: (((( dbscan clustering algorithm ) OR ( from making algorithm ))) OR ( element data algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("dbscan clustering algorithm") OR ("from making algorithm"))) OR ("element data algorithm"))*.