Perhaps you should try some spelling variations:
"modified robust optimization algorithmsss" » "modified robust optimization algorithms", "modified robust optimisation algorithm", "modified robust estimation algorithms", "modified robust optimization algorithmssss", "modified robust optimisation algorithmsss", "modified robust estimation algorithmsss"
"modified parameter optimization algorithm" » "modified parameter optimization algorithms", "modified parameter optimisation algorithm", "modified parameter estimation algorithm", "modified parameters optimization 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 robust optimization algorithmsss") or ("modified parameter optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified robust optimization algorithmsss") OR ("modified parameter optimization algorithm")).
• Removing quotes may allow a broader search: (( modified robust optimization algorithmsss ) or ( modified parameter optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified robust optimization algorithmsss") or ("modified parameter optimization algorithm"))*.