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