Perhaps you should try some spelling variations:
whale optimization » swarm optimization (Expand Search)
path optimization » swarm optimization (Expand Search), based optimization (Expand Search), _ optimization (Expand Search)
binary marker » binary mask (Expand Search)
marker whale » marked scale (Expand Search), marker base (Expand Search)
binary back » binary mask (Expand Search)
back path » back pain (Expand Search), back moth (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 marker whale optimization algorithm ) OR ( binary back path optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( binary marker whale optimization algorithm ) OR ( binary back path optimization algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( binary marker whale optimization algorithm ) OR ( binary back path optimization algorithm ))*.