Perhaps you should try some spelling variations:
"binary rank level optimization algorithm" » "binary rank based optimization algorithm" (Expand Search), "binary rat level optimization algorithm" (Expand Search)
"binary simple global optimization algorithm" » "binary sample global optimization 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: (("binary rank level optimization algorithm") OR ("binary simple global optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary rank level optimization algorithm\") OR (\"binary simple global optimization algorithm\"))*".
• Removing quotes may allow a broader search: (( binary rank level optimization algorithm ) OR ( binary simple global optimization algorithm ))*.