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 forest algorithm" » "element ore algorithm" (Expand Search)
"present data algorithm" » "present data algorithms" (Expand Search), "present update algorithm" (Expand Search), "present each algorithm" (Expand Search), "patient data algorithm" (Expand Search)

Try widening your search to All Fields.

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