Perhaps you should try some spelling variations:
"image processing algorithm" » "image processing algorithms" (Expand Search)
"elements de algorithms" » "elements _ algorithms" (Expand Search), "elements deer algorithm" (Expand Search), "elements rd algorithm" (Expand Search), "elementi per algorithms" (Expand Search)
"elements tree algorithms" » "elements three algorithms" (Expand Search), "elements free algorithms" (Expand Search)

Try widening your search to All Fields.

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