Perhaps you should try some spelling variations:
"pre processing algorithm" » "pre modeling algorithm" (Expand Search), "pre routing algorithm" (Expand Search), "pre tracking algorithm" (Expand Search), "time processing algorithm" (Expand Search), "_ processing algorithm" (Expand Search), "rna processing algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"element cscap algorithm" » "element cc3d algorithm" (Expand Search), "element ipca algorithm" (Expand Search), "element custom 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 method algorithm") OR ("element cscap algorithm"))) OR ("pre processing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element method algorithm\") OR (\"element cscap algorithm\"))) OR (\"pre processing algorithm\"))".
• Removing quotes may allow a broader search: (((( element method algorithm ) OR ( element cscap algorithm ))) OR ( pre processing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element method algorithm") OR ("element cscap algorithm"))) OR ("pre processing algorithm"))*.