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 study algorithm" » "present study algorithm" (Expand Search), "recent study algorithm" (Expand Search), "event study algorithm" (Expand Search)
"element te algorithm" » "element tide algorithm" (Expand Search), "element new algorithm" (Expand Search), "element de algorithms" (Expand Search), "element _ algorithm" (Expand Search), "element data algorithm" (Expand Search), "element mesh 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 te algorithm") OR ("element study algorithm"))) OR ("sediment sampling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element te algorithm\") OR (\"element study algorithm\"))) OR (\"sediment sampling algorithm\"))".
• Removing quotes may allow a broader search: (((( element te algorithm ) OR ( element study algorithm ))) OR ( sediment sampling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element te algorithm") OR ("element study algorithm"))) OR ("sediment sampling algorithm"))*.