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