Perhaps you should try some spelling variations:
"image processing algorithm" » "image modeling algorithm" (Expand Search), "image routing algorithm" (Expand Search), "image tracking 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 two algorithms" » "element ml algorithms" (Expand Search), "element _ algorithms" (Expand Search), "element art algorithms" (Expand Search), "element te algorithms" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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