Perhaps you should try some spelling variations:
"select controls algorithm" » "select control algorithm" (Expand Search), "selected controls algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level colony algorithm" (Expand Search), "level scheduling algorithm" (Expand Search)
"complement cc3d algorithm" » "complement rd algorithm" (Expand Search), "implement cc3d algorithm" (Expand Search), "complementary cc3d 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: (((("complement cc3d algorithm") OR ("select controls algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"complement cc3d algorithm\") OR (\"select controls algorithm\"))) OR (\"level coding algorithm\"))*".
• Removing quotes may allow a broader search: (((( complement cc3d algorithm ) OR ( select controls algorithm ))) OR ( level coding algorithm ))*.