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)
"data learning algorithm" » "data learning algorithms" (Expand Search), "meta learning algorithm" (Expand Search), "deep learning algorithm" (Expand Search), "a learning algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean 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: (((("data learning algorithm") OR ("image processing algorithm"))) OR ("element method algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"data learning algorithm\") OR (\"image processing algorithm\"))) OR (\"element method algorithm\"))".
• Removing quotes may allow a broader search: (((( data learning algorithm ) OR ( image processing algorithm ))) OR ( element method algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("data learning algorithm") OR ("image processing algorithm"))) OR ("element method algorithm"))*.