Perhaps you should try some spelling variations:
"post processing algorithm" » "post routing algorithm" (Expand Search), "post tracking algorithm" (Expand Search), "post boosting algorithm" (Expand Search), "waste processing algorithm" (Expand Search), "wood processing algorithm" (Expand Search), "food processing algorithm" (Expand Search)
"fold modeling algorithm" » "fold making algorithm" (Expand Search), "field modeling algorithm" (Expand Search), "flood modeling algorithm" (Expand Search), "yield modeling algorithm" (Expand Search)
"element modbo algorithm" » "element model 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 ("fold modeling algorithm"))) OR ("element modbo algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"post processing algorithm\") OR (\"fold modeling algorithm\"))) OR (\"element modbo algorithm\"))".
• Removing quotes may allow a broader search: (((( post processing algorithm ) OR ( fold modeling algorithm ))) OR ( element modbo algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("post processing algorithm") OR ("fold modeling algorithm"))) OR ("element modbo algorithm"))*.