Perhaps you should try some spelling variations:
"modified policy estimation algorithms" » "modified policy estimation algorithm", "modified policy optimization algorithms", "modified policy optimisation algorithm", "modified pose estimation algorithms", "modified motion estimation algorithms"
"modified notion optimized algorithms" » "modified notion optimized algorithm", "modified notion optimizer algorithms", "modified notion optimization 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 notion optimized algorithms") OR ("modified policy estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified notion optimized algorithms ) or ( modified policy estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified notion optimized algorithms") or ("modified policy estimation algorithms"))*.