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