Perhaps you should try some spelling variations:
"modified bayesian optimization algorithmssss" » "modified bayesian optimization algorithms", "modified bayesian optimisation algorithm", "modified bayesian optimization algorithmsssss", "modified bayesian optimisation algorithmssss", "modified bayesian estimation algorithmssss"
"modified _ optimization algorithm" » "modified _ optimization algorithms", "modified _ optimisation algorithm", "modified _ estimation algorithm"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified _ optimization algorithm") or ("modified bayesian optimization algorithmssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified _ optimization algorithm") OR ("modified bayesian optimization algorithmssss")).
• Removing quotes may allow a broader search: (( modified _ optimization algorithm ) or ( modified bayesian optimization algorithmssss )).
• Adding a wildcard symbol may retrieve word variants: (("modified _ optimization algorithm") or ("modified bayesian optimization algorithmssss"))*.