Perhaps you should try some spelling variations:
"query processing algorithm" » "query processing algorithms" (Expand Search), "text processing algorithm" (Expand Search)
"element mesh algorithm" » "element deer algorithm" (Expand Search), "element search algorithm" (Expand Search)
"element based algorithm" » "event based algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

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