Perhaps you should try some spelling variations:
"ant colony optimization algorithm" » "ant colony optimisation algorithm" (Expand Search), "a colony optimization algorithm" (Expand Search), "ant colony optimization algoritmo" (Expand Search)
"ant colon optimization algorithm" » "ant colony optimisation algorithm" (Expand Search), "ant cooling optimization algorithm" (Expand Search), "ant route optimization algorithm" (Expand Search), "a colon optimization algorithm" (Expand Search), "ant colon optimization algoritmo" (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: "((\"ant colon optimization algorithm\") OR (\"ant colony optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( ant colon optimization algorithm ) OR ( ant colony optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("ant colon optimization algorithm") OR ("ant colony optimization algorithm"))*.