Perhaps you should try some spelling variations:
"client sampling algorithm" » "client mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search)
"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 new algorithm" » "element novel algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element te algorithm" (Expand Search), "element ree 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 new algorithm") OR ((("client sampling algorithm") OR ("element tracking algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element new algorithm\") OR (((\"client sampling algorithm\") OR (\"element tracking algorithm\"))))".
• Removing quotes may allow a broader search: (( element new algorithm ) OR ((( client sampling algorithm ) OR ( element tracking algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element new algorithm") OR ((("client sampling algorithm") OR ("element tracking algorithm"))))*.