Perhaps you should try some spelling variations:
"sleep tracking algorithm" » "sleep tracking algorithms" (Expand Search), "sleep training algorithms" (Expand Search), "sleep making algorithm" (Expand Search)
"element mapping algorithm" » "element making algorithm" (Expand Search), "element mining algorithm" (Expand Search), "element learning algorithm" (Expand Search), "elemental mapping algorithm" (Expand Search), "element modeling algorithm" (Expand Search), "argument mapping algorithm" (Expand Search)
"elements cnn algorithm" » "elements mean algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements ii algorithm" (Expand Search), "elements crcy algorithm" (Expand Search), "elements ices algorithm" (Expand Search), "elements upon 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: (("elements cnn algorithm") OR ((("sleep tracking algorithm") OR ("element mapping algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements cnn algorithm\") OR (((\"sleep tracking algorithm\") OR (\"element mapping algorithm\"))))".
• Removing quotes may allow a broader search: (( elements cnn algorithm ) OR ((( sleep tracking algorithm ) OR ( element mapping algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements cnn algorithm") OR ((("sleep tracking algorithm") OR ("element mapping algorithm"))))*.