Perhaps you should try some spelling variations:
"plant processing algorithm" » "post processing algorithm" (Expand Search), "image processing algorithm" (Expand Search), "data processing algorithm" (Expand Search)
"element means algorithm" » "element search algorithm" (Expand Search), "element mesh algorithm" (Expand Search), "element meshs algorithm" (Expand Search), "element tes algorithm" (Expand Search), "latent means algorithm" (Expand Search)
"element mean algorithm" » "element new algorithm" (Expand Search), "element em algorithm" (Expand Search), "element each algorithm" (Expand Search), "element mesh algorithm" (Expand Search), "element te algorithm" (Expand Search), "latent mean algorithm" (Expand Search)

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