Perhaps you should try some spelling variations:
"modified notion optimization algorithmssssss" » "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified network optimization algorithmssssss", "modified policy optimization algorithmssssss", "modified allocation optimization algorithmssssss"
"modified parameter estimates algorithms" » "modified parameter estimation algorithms", "modified parameter estimation algorithm", "modified parameter optimized algorithms"

You may be able to get more results by adjusting your search query.

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