Perhaps you should try some spelling variations:
"select controls algorithm" » "select control algorithm" (Expand Search), "select control algorithms" (Expand Search), "select centrality algorithm" (Expand Search), "selected controls algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using 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: (((("select controls algorithm") OR ("element method algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"select controls algorithm\") OR (\"element method algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( select controls algorithm ) OR ( element method algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("select controls algorithm") OR ("element method algorithm"))) OR ("level coding algorithm"))*.