Perhaps you should try some spelling variations:
"element sampling algorithm" » "sediment sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "client sampling algorithm" (Expand Search)
"element mining algorithm" » "element learning algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "element bonding algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"present model algorithm" » "present novel algorithm" (Expand Search), "present forest algorithm" (Expand Search), "element model algorithm" (Expand Search), "rodent model algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("element sampling algorithm") OR ("element mining algorithm"))) OR ("present model algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element sampling algorithm\") OR (\"element mining algorithm\"))) OR (\"present model algorithm\"))".
• Removing quotes may allow a broader search: (((( element sampling algorithm ) OR ( element mining algorithm ))) OR ( present model algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element sampling algorithm") OR ("element mining algorithm"))) OR ("present model algorithm"))*.