Perhaps you should try some spelling variations:
"data preprocessingnb algorithm" » "data processing algorithm" (Expand Search), "data preprocessing algorithm" (Expand Search), "dataset preprocessing algorithm" (Expand Search)
"elements two algorithms" » "elements ml algorithms" (Expand Search), "elements _ algorithms" (Expand Search), "elements art algorithms" (Expand Search), "elements wt algorithms" (Expand Search), "elements upon algorithms" (Expand Search)
"element g algorithm" » "element _ algorithm" (Expand Search), "element b algorithm" (Expand Search), "element gnb algorithm" (Expand Search), "elements _ 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 preprocessingnb algorithm") OR ((("elements two algorithms") OR ("element g algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"data preprocessingnb algorithm\") OR (((\"elements two algorithms\") OR (\"element g algorithm\"))))".
• Removing quotes may allow a broader search: (( data preprocessingnb algorithm ) OR ((( elements two algorithms ) OR ( element g algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("data preprocessingnb algorithm") OR ((("elements two algorithms") OR ("element g algorithm"))))*.