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)
"elements ppo algorithm" » "elements pso algorithm" (Expand Search), "elements two algorithms" (Expand Search), "elements _ algorithm" (Expand Search), "elements ppm algorithm" (Expand Search), "elements upon 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: "((((\"elements ppo algorithm\") OR (\"element method algorithm\"))) OR (\"query processing algorithm\"))~".
• Removing quotes may allow a broader search: (((( elements ppo algorithm ) OR ( element method algorithm ))) OR ( query processing algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("elements ppo algorithm") OR ("element method algorithm"))) OR ("query processing algorithm"))*.