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 each algorithm" » "element search algorithm" (Expand Search), "element means algorithm" (Expand Search), "element data algorithm" (Expand Search), "element mesh algorithm" (Expand Search)
"element em algorithm" » "element new algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search), "element ree algorithm" (Expand Search), "element g algorithm" (Expand Search)

Try widening your search to All Fields.

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