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)
"element update algorithm" » "element pass algorithm" (Expand Search), "element data algorithms" (Expand Search), "element ipca algorithm" (Expand Search), "element data algorithm" (Expand Search)
"patient data algorithm" » "patient data algorithms" (Expand Search), "patient atlas algorithm" (Expand Search), "patient each algorithm" (Expand Search), "patient care algorithm" (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: (("image processing algorithm") OR ((("element update algorithm") OR ("patient data algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"image processing algorithm\") OR (((\"element update algorithm\") OR (\"patient data algorithm\"))))".
• Removing quotes may allow a broader search: (( image processing algorithm ) OR ((( element update algorithm ) OR ( patient data algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("image processing algorithm") OR ((("element update algorithm") OR ("patient data algorithm"))))*.