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