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 ore algorithm" » "element rf algorithm" (Expand Search), "element rl algorithm" (Expand Search), "element erf algorithm" (Expand Search), "element ree algorithm" (Expand Search), "element model algorithm" (Expand Search), "elements over algorithm" (Expand Search)
"element te algorithms" » "element de algorithms" (Expand Search), "element tree algorithms" (Expand Search), "element two algorithms" (Expand Search), "element _ algorithms" (Expand Search), "element data algorithms" (Expand Search), "element mesh algorithms" (Expand Search)

Try widening your search to All Fields.

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