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