Perhaps you should try some spelling variations:
"client mining algorithm" » "client learning algorithm" (Expand Search), "client means algorithm" (Expand Search)
"client sampling algorithm" » "sediment sampling algorithm" (Expand Search)
"rna processing algorithm" » "data processing algorithm" (Expand Search), "signal processing algorithm" (Expand Search), "image processing algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("rna processing algorithm") OR ((("client sampling algorithm") OR ("client mining algorithm"))))~.
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• Removing quotes may allow a broader search: (( rna processing algorithm ) OR ((( client sampling algorithm ) OR ( client mining algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("rna processing algorithm") OR ((("client sampling algorithm") OR ("client mining algorithm"))))*.