Perhaps you should try some spelling variations:
"query processing algorithm" » "query modeling algorithm" (Expand Search), "query routing algorithm" (Expand Search), "query tracking algorithm" (Expand Search), "pre processing algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element modbo algorithm" (Expand Search)
"element means algorithm" » "element search algorithm" (Expand Search), "element mesh algorithm" (Expand Search)

Try widening your search to All Fields.

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