Perhaps you should try some spelling variations:
"query processing algorithm" » "query processing algorithms" (Expand Search), "text processing algorithm" (Expand Search)
"elements data algorithm" » "elements jaya algorithm" (Expand Search), "elements deer algorithm" (Expand Search)
"element update algorithm" » "element updated algorithm" (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: (("elements data algorithm") OR ((("query processing algorithm") OR ("element update algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements data algorithm\") OR (((\"query processing algorithm\") OR (\"element update algorithm\"))))".
• Removing quotes may allow a broader search: (( elements data algorithm ) OR ((( query processing algorithm ) OR ( element update algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements data algorithm") OR ((("query processing algorithm") OR ("element update algorithm"))))*.