Perhaps you should try some spelling variations:
"modified bayesian optimization algorithms" » "modified bayesian optimisation algorithm", "modified bayesian estimation algorithm", "modified bayesian optimized algorithms"
"modified policy estimation algorithms" » "modified policy estimation algorithm", "modified policy optimisation algorithm", "modified policy approximation algorithms", "modified policy optimization algorithms", "modified pose estimation algorithms", "modified motion estimation algorithms"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified policy estimation algorithms") OR ("modified bayesian optimization algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified policy estimation algorithms\") OR (\"modified bayesian optimization algorithms\"))".
• Removing quotes may allow a broader search: (( modified policy estimation algorithms ) OR ( modified bayesian optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified policy estimation algorithms") OR ("modified bayesian optimization algorithms"))*.