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