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 method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"elements wt algorithms" » "elements art algorithms" (Expand Search), "elements two algorithms" (Expand Search), "elements ml algorithms" (Expand Search), "elements _ algorithms" (Expand Search), "elements b algorithms" (Expand Search), "elements fe algorithms" (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 method algorithm") OR ("elements wt algorithms"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"post processing algorithm\") OR (((\"element method algorithm\") OR (\"elements wt algorithms\"))))".
• Removing quotes may allow a broader search: (( post processing algorithm ) OR ((( element method algorithm ) OR ( elements wt algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("post processing algorithm") OR ((("element method algorithm") OR ("elements wt algorithms"))))*.