Perhaps you should try some spelling variations:
"client sampling algorithm" » "client making algorithm" (Expand Search), "client modeling algorithm" (Expand Search), "client mining algorithm" (Expand Search)
"sediment sampling algorithm" » "sediment making algorithm" (Expand Search), "sediment modeling algorithm" (Expand Search), "sediment mining algorithm" (Expand Search), "sediment samples algorithm" (Expand Search), "sediment sample algorithm" (Expand Search)
"element em algorithm" » "element new algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element ree 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 em algorithm") OR ((("client sampling algorithm") OR ("sediment sampling algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element em algorithm\") OR (((\"client sampling algorithm\") OR (\"sediment sampling algorithm\"))))".
• Removing quotes may allow a broader search: (( element em algorithm ) OR ((( client sampling algorithm ) OR ( sediment sampling algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element em algorithm") OR ((("client sampling algorithm") OR ("sediment sampling algorithm"))))*.