Perhaps you should try some spelling variations:
"kant colony optimization algorithm" » "kant colony optimisation algorithm" (Expand Search), "ant colony optimization algorithm" (Expand Search), "kant colonyy optimization algorithm" (Expand Search), "ka colony optimization algorithm" (Expand Search)
"ant colon optimisation algorithm" » "ant colony optimisation algorithm" (Expand Search), "ant wolf optimisation algorithm" (Expand Search), "ant cooling optimization algorithm" (Expand Search), "a colon optimisation algorithm" (Expand Search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"kant colony optimization algorithm\") OR (\"ant colon optimisation algorithm\"))~".
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