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)
"event study algorithm" » "event wsindy algorithm" (Expand Search), "event td3 algorithm" (Expand Search), "event seu algorithm" (Expand Search), "recent study algorithm" (Expand Search), "present study algorithm" (Expand Search)
"element rl algorithms" » "element ml algorithms" (Expand Search), "element rl algorithm" (Expand Search), "element art algorithms" (Expand Search), "element ore algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element _ algorithms" (Expand Search)

Try widening your search to All Fields.

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