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