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