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