Perhaps you should try some spelling variations:
"modified parameter optimization algorithm" » "modified parameter optimization algorithms", "modified parameter optimisation algorithm", "modified parameter estimation algorithm", "modified parameters optimization algorithm"
"machine learning predation algorithm" » "machine learning predators algorithm", "machine learning estimation algorithm", "machine learning prediction algorithm", "machine learning emotion algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("machine learning predation algorithm") OR ("modified parameter optimization algorithm"))~.
• Removing quotes may allow a broader search: (( machine learning predation algorithm ) or ( modified parameter optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("machine learning predation algorithm") or ("modified parameter optimization algorithm"))*.