Perhaps you should try some spelling variations:
"element sampling algorithm" » "element mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "client sampling algorithm" (Expand Search)
"sleep processing algorithm" » "speech processing algorithm" (Expand Search), "level processing algorithm" (Expand Search), "salmon processing algorithm" (Expand Search)
"elements ii algorithm" » "elements _ algorithm" (Expand Search), "elements em algorithm" (Expand Search), "elements new algorithm" (Expand Search), "elements b algorithm" (Expand Search), "elements wt 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 ii algorithm") OR ((("element sampling algorithm") OR ("sleep processing algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements ii algorithm\") OR (((\"element sampling algorithm\") OR (\"sleep processing algorithm\"))))".
• Removing quotes may allow a broader search: (( elements ii algorithm ) OR ((( element sampling algorithm ) OR ( sleep processing algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements ii algorithm") OR ((("element sampling algorithm") OR ("sleep processing algorithm"))))*.