Perhaps you should try some spelling variations:
"binary task bayesian optimization algorithm" » "binary task based optimization algorithm" (Expand Search)
"binary ppk global optimization algorithm" » "binary pdm global 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 ppk global optimization algorithm\") OR (\"binary task bayesian optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( binary ppk global optimization algorithm ) OR ( binary task bayesian optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("binary ppk global optimization algorithm") OR ("binary task bayesian optimization algorithm"))*.