Perhaps you should try some spelling variations:
"modified parameters optimisation algorithm" » "modified parameter optimization algorithm", "modified parameter estimation algorithm", "modified parameters estimation algorithm", "modified parameters estimation algorithms"
"modified passive optimization algorithms" » "modified passive estimation algorithms", "modified passive estimation algorithm", "modified passive optimized algorithms", "modified bayesian optimization algorithms", "modified game optimization algorithms", "modified policy optimization algorithms", "modified adaptive optimization algorithms"

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: (("modified parameters optimisation algorithm") OR ("modified passive optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified parameters optimisation algorithm ) or ( modified passive optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified parameters optimisation algorithm") or ("modified passive optimization algorithms"))*.