Perhaps you should try some spelling variations:
"data clustering algorithm" » "deep clustering algorithm" (Expand Search), "spatial clustering algorithm" (Expand Search), "dbscan clustering algorithm" (Expand Search)
"spine using algorithm" » "spine using algorithms" (Expand Search), "spine routing algorithm" (Expand Search), "spine fusion algorithm" (Expand Search), "space using algorithm" (Expand Search), "site using algorithm" (Expand Search), "joined using algorithm" (Expand Search)
"relevant data algorithm" » "relevant data algorithms" (Expand Search), "relevant update algorithm" (Expand Search), "relevant atlas algorithm" (Expand Search)

Try widening your search to All Fields.

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