Perhaps you should try some spelling variations:
"modified stochastic optimization algorithm" » "modified stochastic optimization algorithms", "modified stochastic optimisation algorithm", "modified stochastic estimation algorithm"
"modified caging predation algorithm" » "modified caging predators algorithm", "modified caging estimation algorithm", "modified aging predation algorithm", "modified changing predation algorithm", "modified charging predation algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified caging predation algorithm") OR ("modified stochastic optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified caging predation algorithm\") OR (\"modified stochastic optimization algorithm\"))".
• Removing quotes may allow a broader search: (( modified caging predation algorithm ) OR ( modified stochastic optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified caging predation algorithm") OR ("modified stochastic optimization algorithm"))*.