Perhaps you should try some spelling variations:
"image processing algorithm" » "image routing algorithm" (Expand Search), "image tracking algorithm" (Expand Search), "image boosting algorithm" (Expand Search)
"image modeling algorithm" » "image making algorithm" (Expand Search), "age modeling algorithm" (Expand Search), "climate modeling algorithm" (Expand Search), "case modeling 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)

Try widening your search to All Fields.

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