Perhaps you should try some spelling variations:
"binary mask _ optimization algorithm" » "binary masks _ optimization algorithm" (Expand Search), "binary mass _ optimization algorithm" (Expand Search), "binary task _ optimization algorithm" (Expand Search)
"binary mask swarm optimization algorithm" » "binary masks swarm optimization algorithm" (Expand Search), "binary mass swarm optimization algorithm" (Expand Search), "binary task swarm optimization algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary mask _ optimization algorithm\") OR (\"binary mask swarm optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( binary mask _ optimization algorithm ) OR ( binary mask swarm optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("binary mask _ optimization algorithm") OR ("binary mask swarm optimization algorithm"))*.