Perhaps you should try some spelling variations:
"text processing algorithm" » "text modeling algorithm" (Expand Search), "text routing algorithm" (Expand Search), "text tracking algorithm" (Expand Search), "time processing algorithm" (Expand Search), "post processing algorithm" (Expand Search), "waste processing algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"element rf algorithm" » "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element art algorithms" (Expand Search), "element ore algorithm" (Expand Search), "element ree algorithm" (Expand Search)

Try widening your search to All Fields.

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