Perhaps you should try some spelling variations:
"modified notion estimation algorithmss" » "modified notion estimation algorithms", "modified notion estimation algorithm", "modified notion optimization algorithms", "modified motion estimation algorithmss"
"modified policy optimisation algorithm" » "modified policy optimization algorithms", "modified policy estimation algorithm", "modified policy estimation algorithms", "modified policy optimization algorithm", "modified topology optimization algorithm"

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 notion estimation algorithmss") OR ("modified policy optimisation algorithm"))~.
• Removing quotes may allow a broader search: (( modified notion estimation algorithmss ) or ( modified policy optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified notion estimation algorithmss") or ("modified policy optimisation algorithm"))*.