Perhaps you should try some spelling variations:
"data processing algorithm" » "data modeling algorithm" (Expand Search), "data routing algorithm" (Expand Search), "data tracking algorithm" (Expand Search), "image processing algorithm" (Expand Search)
"element study algorithm" » "element wsindy algorithm" (Expand Search), "element td3 algorithm" (Expand Search), "element seu algorithm" (Expand Search), "relevant study algorithm" (Expand Search), "present study algorithm" (Expand Search), "recent study algorithm" (Expand Search)
"elements rf algorithm" » "elements _ algorithm" (Expand Search), "elements ii algorithm" (Expand Search), "elements art algorithms" (Expand Search), "elements ree algorithm" (Expand Search), "elements res algorithm" (Expand Search)

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