Perhaps you should try some spelling variations:
"light processing algorithm" » "signal processing algorithm" (Expand Search), "post processing algorithm" (Expand Search), "time processing algorithm" (Expand Search)
"element forest algorithm" » "element ore algorithm" (Expand Search)
"elements em algorithm" » "elements new algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements _ algorithms" (Expand Search), "elements ree algorithm" (Expand Search), "elements ppm algorithm" (Expand Search), "elements res 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: (("light processing algorithm") OR ((("element forest algorithm") OR ("elements em algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"light processing algorithm\") OR (((\"element forest algorithm\") OR (\"elements em algorithm\"))))".
• Removing quotes may allow a broader search: (( light processing algorithm ) OR ((( element forest algorithm ) OR ( elements em algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("light processing algorithm") OR ((("element forest algorithm") OR ("elements em algorithm"))))*.