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)
"present data algorithms" » "present art algorithms" (Expand Search), "present all algorithms" (Expand Search), "present both algorithms" (Expand Search), "presence data algorithms" (Expand Search), "present day algorithms" (Expand Search), "recent data algorithms" (Expand Search)
"element ree algorithms" » "element tree algorithms" (Expand Search), "element three algorithms" (Expand Search), "element rl algorithms" (Expand Search), "elements ree algorithms" (Expand Search), "elements res algorithms" (Expand Search), "element te algorithms" (Expand Search)

Try widening your search to All Fields.

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