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