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 means algorithm" (Expand Search), "element mean 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)

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