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