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

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