Perhaps you should try some spelling variations:
"sleep processing algorithm" » "speech processing algorithm" (Expand Search), "level processing algorithm" (Expand Search), "salmon processing algorithm" (Expand Search)
"effects model algorithm" » "effects novel algorithm" (Expand Search)
"effects forest algorithm" » "effects test algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

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