Perhaps you should try some spelling variations:
"end processing algorithm" » "end routing algorithm" (Expand Search), "end tracking algorithm" (Expand Search), "end boosting algorithm" (Expand Search), "rna processing algorithm" (Expand Search), "wood processing algorithm" (Expand Search), "food processing algorithm" (Expand Search)
"post modeling algorithm" » "post making algorithm" (Expand Search), "best modeling algorithm" (Expand Search), "forest modeling algorithm" (Expand Search), "joint modeling algorithm" (Expand Search)
"present data algorithm" » "present data algorithms" (Expand Search), "present update algorithm" (Expand Search), "present atlas algorithm" (Expand Search), "presence data algorithm" (Expand Search), "present day algorithm" (Expand Search), "recent data algorithm" (Expand Search)

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