Perhaps you should try some spelling variations:
"binary image based optimization algorithm" » "binary image whale optimization algorithm" (Expand Search)
"binary risk based optimization algorithm" » "binary risk whale optimization algorithm" (Expand Search), "primary risk based optimization algorithm" (Expand Search), "dietary risk 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 image based optimization algorithm") OR ("binary risk based optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary image based optimization algorithm\") OR (\"binary risk based optimization algorithm\"))".
• Removing quotes may allow a broader search: (( binary image based optimization algorithm ) OR ( binary risk based optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("binary image based optimization algorithm") OR ("binary risk based optimization algorithm"))*.