Perhaps you should try some spelling variations:
"light processing algorithm" » "signal processing algorithm" (Expand Search), "post processing algorithm" (Expand Search), "time processing algorithm" (Expand Search)
"sediment rf algorithm" » "sediment _ algorithm" (Expand Search), "sediment ii algorithm" (Expand Search), "sediment art algorithms" (Expand Search), "sediment p algorithm" (Expand Search), "sediment from algorithm" (Expand Search)
"sediment em algorithm" » "sediment new algorithm" (Expand Search), "sediment _ algorithm" (Expand Search), "sediment _ algorithms" (Expand Search), "sediment p algorithm" (Expand Search), "sediment from algorithm" (Expand Search)

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