Perhaps you should try some spelling variations:
"data processing algorithm" » "data modeling algorithm" (Expand Search), "data routing algorithm" (Expand Search), "data tracking algorithm" (Expand Search), "image processing algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"element mdem algorithms" » "element ml algorithms" (Expand Search), "element em algorithm" (Expand Search), "element tree algorithms" (Expand Search), "element model algorithms" (Expand Search), "elements mges 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: (((("element mdem algorithms") OR ("element method algorithm"))) OR ("data processing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element mdem algorithms\") OR (\"element method algorithm\"))) OR (\"data processing algorithm\"))".
• Removing quotes may allow a broader search: (((( element mdem algorithms ) OR ( element method algorithm ))) OR ( data processing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element mdem algorithms") OR ("element method algorithm"))) OR ("data processing algorithm"))*.