Perhaps you should try some spelling variations:
"post processing algorithm" » "post modeling algorithm" (Expand Search), "post routing algorithm" (Expand Search), "post tracking algorithm" (Expand Search), "waste processing algorithm" (Expand Search), "wood processing algorithm" (Expand Search), "food processing algorithm" (Expand Search)
"end processing algorithm" » "end modeling algorithm" (Expand Search), "end routing algorithm" (Expand Search), "end tracking algorithm" (Expand Search), "rna processing algorithm" (Expand Search), "wood processing algorithm" (Expand Search), "food processing algorithm" (Expand Search)
"present update algorithm" » "present pass algorithm" (Expand Search), "present data algorithms" (Expand Search), "present ipca algorithm" (Expand Search), "present data algorithm" (Expand Search)

Try widening your search to All Fields.

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