Perhaps you should try some spelling variations:
"waste processing algorithm" » "data processing algorithm" (Expand Search), "image processing algorithm" (Expand Search), "wood processing algorithm" (Expand Search)
"element mesh algorithm" » "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element best algorithms" (Expand Search), "element method algorithm" (Expand Search)
"element best algorithm" » "element forest algorithm" (Expand Search), "element based algorithm" (Expand Search), "element new algorithm" (Expand Search), "element te algorithm" (Expand Search), "element ree algorithm" (Expand Search), "elements res algorithm" (Expand Search)

Try widening your search to All Fields.

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