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

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified changing predation algorithm") or ("modified stochastic optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified changing predation algorithm") OR ("modified stochastic optimization algorithms")).
• Removing quotes may allow a broader search: (( modified changing predation algorithm ) or ( modified stochastic optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified changing predation algorithm") or ("modified stochastic optimization algorithms"))*.