Perhaps you should try some spelling variations:
"element controls algorithm" » "element control algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level colony algorithm" (Expand Search), "level scheduling algorithm" (Expand Search)
"elements ppm algorithm" » "elements rd algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elementi per algorithm" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("elements ppm algorithm") OR ("element controls algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements ppm algorithm\") OR (\"element controls algorithm\"))) OR (\"level coding algorithm\"))*".
• Removing quotes may allow a broader search: (((( elements ppm algorithm ) OR ( element controls algorithm ))) OR ( level coding algorithm ))*.