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)
"rna processing algorithm" » "data processing algorithm" (Expand Search), "signal processing algorithm" (Expand Search), "image processing algorithm" (Expand Search)
"element data algorithm" » "element data algorithms" (Expand Search), "element update algorithm" (Expand Search), "element each algorithm" (Expand Search), "relevant data algorithm" (Expand Search), "movement data algorithm" (Expand Search), "present 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: (((("rna processing algorithm") OR ("waste processing algorithm"))) OR ("element data algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"rna processing algorithm\") OR (\"waste processing algorithm\"))) OR (\"element data algorithm\"))".
• Removing quotes may allow a broader search: (((( rna processing algorithm ) OR ( waste processing algorithm ))) OR ( element data algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("rna processing algorithm") OR ("waste processing algorithm"))) OR ("element data algorithm"))*.