Perhaps you should try some spelling variations:
"elements sampling algorithm" » "elements mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "client sampling algorithm" (Expand Search)
"present forest algorithm" » "present free algorithm" (Expand Search)
"event free algorithm" » "event tree algorithms" (Expand Search), "event three algorithms" (Expand Search), "event five algorithms" (Expand Search), "solvent free 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: (((("present forest algorithm") OR ("event free algorithm"))) OR ("elements sampling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"present forest algorithm\") OR (\"event free algorithm\"))) OR (\"elements sampling algorithm\"))".
• Removing quotes may allow a broader search: (((( present forest algorithm ) OR ( event free algorithm ))) OR ( elements sampling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("present forest algorithm") OR ("event free algorithm"))) OR ("elements sampling algorithm"))*.