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)
"relevant data algorithm" » "relevant data algorithms" (Expand Search), "relevant update algorithm" (Expand Search), "relevant atlas algorithm" (Expand Search)
"element cnn algorithm" » "element mean algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii 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 ((("relevant data algorithm") OR ("element cnn algorithm"))))~.
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• Removing quotes may allow a broader search: (( post processing algorithm ) OR ((( relevant data algorithm ) OR ( element cnn algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("post processing algorithm") OR ((("relevant data algorithm") OR ("element cnn algorithm"))))*.