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 ml algorithms" » "element _ algorithms" (Expand Search), "element _ algorithm" (Expand Search), "element te algorithms" (Expand Search), "element g algorithms" (Expand Search)
"element lr algorithm" » "element mlm algorithm" (Expand Search), "element erf algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ore algorithm" (Expand Search), "elements zr algorithm" (Expand Search)

Try widening your search to All Fields.

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