Perhaps you should try some spelling variations:
"element matching algorithm" » "element mining algorithm" (Expand Search), "element sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "employment matching algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"sleep tracking algorithm" » "sleep learning algorithm" (Expand Search), "sleep processing algorithm" (Expand Search)
"element rl algorithm" » "element rl algorithms" (Expand Search), "element rf algorithm" (Expand Search), "element ml algorithms" (Expand Search), "element ree algorithm" (Expand Search), "element ore algorithm" (Expand Search), "element _ 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: (("element rl algorithm") OR ((("element matching algorithm") OR ("sleep tracking algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element rl algorithm\") OR (((\"element matching algorithm\") OR (\"sleep tracking algorithm\"))))".
• Removing quotes may allow a broader search: (( element rl algorithm ) OR ((( element matching algorithm ) OR ( sleep tracking algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element rl algorithm") OR ((("element matching algorithm") OR ("sleep tracking algorithm"))))*.