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), "element samplin_ algorithm" (Expand Search), "element samplinb algorithm" (Expand Search), "element samplingnb algorithm" (Expand Search)
"element de algorithms" » "element _ algorithms" (Expand Search), "element ml algorithms" (Expand Search), "element rl algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element ore algorithms" (Expand Search)
"element g algorithm" » "element _ algorithm" (Expand Search), "element b algorithm" (Expand Search), "element gnb algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "element te algorithm" (Expand Search)

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