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)
"present update algorithm" » "present pass algorithm" (Expand Search), "present data algorithms" (Expand Search), "present ipca algorithm" (Expand Search), "present data algorithm" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method algorithm" (Expand Search), "elements mges algorithm" (Expand Search), "element te algorithm" (Expand Search)

Try widening your search to All Fields.

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