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 de algorithms" » "element _ algorithms" (Expand Search), "element ml algorithms" (Expand Search), "element rl algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element ore algorithms" (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 de algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"rna processing algorithm\") OR (\"waste processing algorithm\"))) OR (\"element de algorithms\"))".
• Removing quotes may allow a broader search: (((( rna processing algorithm ) OR ( waste processing algorithm ))) OR ( element de algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("rna processing algorithm") OR ("waste processing algorithm"))) OR ("element de algorithms"))*.