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 wt algorithm" » "elements _ algorithm" (Expand Search), "elements ii algorithm" (Expand Search), "elements rf algorithm" (Expand Search), "elements b algorithm" (Expand Search), "elements fe algorithm" (Expand Search)

Try widening your search to All Fields.

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