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