Perhaps you should try some spelling variations:
"sediment sampling algorithm" » "sediment mining algorithm" (Expand Search), "sediment samples algorithm" (Expand Search), "sediment sample 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)
"elements b algorithm" » "elements _ algorithm" (Expand Search), "elements _ algorithms" (Expand Search), "elements em algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element g algorithm" (Expand Search)

Try widening your search to All Fields.

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