Perhaps you should try some spelling variations:
"binary tttasks _ optimization algorithmss" » "binary tttasks _ optimization algorithms" (Expand Search), "binary ttttasks _ optimization algorithmss" (Expand Search)
"binary ask global optimization algorithm" » "binary task global optimization algorithm" (Expand Search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary tttasks _ optimization algorithmss\") OR (\"binary ask global optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( binary tttasks _ optimization algorithmss ) OR ( binary ask global optimization algorithm ))~.
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