Perhaps you should try some spelling variations:
"data processing algorithm" » "data processing algorithms" (Expand Search)
"post processing algorithm" » "post processing algorithms" (Expand Search), "text processing algorithm" (Expand Search)
"element tide algorithm" » "element rd algorithm" (Expand Search), "element cosine algorithm" (Expand Search), "elements tide 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: (("element tide algorithm") OR ((("data processing algorithm") OR ("post processing algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element tide algorithm\") OR (((\"data processing algorithm\") OR (\"post processing algorithm\"))))".
• Removing quotes may allow a broader search: (( element tide algorithm ) OR ((( data processing algorithm ) OR ( post processing algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element tide algorithm") OR ((("data processing algorithm") OR ("post processing algorithm"))))*.