Perhaps you should try some spelling variations:
"modified policy optimization algorithm" » "modified policy optimization algorithms", "modified policy optimisation algorithm", "modified policy estimation algorithm", "modified topology optimization algorithm"
"modified invasive approximation algorithms" » "modified passive approximation 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 policy optimization algorithm") OR ("modified invasive approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified policy optimization algorithm ) or ( modified invasive approximation algorithms ))~.
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