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