Perhaps you should try some spelling variations:
"post processing algorithm" » "post processing algorithms" (Expand Search), "text processing algorithm" (Expand Search)
"element other algorithms" » "element deer algorithm" (Expand Search), "elements other algorithms" (Expand Search)
"element mean algorithm" » "element deer algorithm" (Expand Search), "element search algorithm" (Expand Search), "elements mean algorithm" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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