Perhaps you should try some spelling variations:
"modified bayesian optimization algorithmssss" » "modified bayesian optimization algorithms", "modified bayesian optimisation algorithm"
"modified parameter estimation algorithms" » "modified parameter estimation algorithm", "modified parameter optimization algorithms", "modified parameter optimisation algorithm", "modified parameter estimates algorithms"

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