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)
"element based algorithms" » "element based algorithm" (Expand Search), "engagement based algorithms" (Expand Search)
"elements magic algorithm" » "elements making algorithm" (Expand Search), "elements mogwo algorithm" (Expand Search), "elements fastica algorithm" (Expand Search), "elements mges algorithm" (Expand Search)

Try widening your search to All Fields.

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