Perhaps you should try some spelling variations:
"modified caging optimisation algorithms" » "modified caging optimisation algorithm", "modified caging optimization algorithms", "modified caging estimation algorithms", "modified staffing optimization algorithms"
"modified parameters optimization algorithm" » "modified parameter optimization algorithm", "modified parameter estimation algorithm", "modified parameters optimization algorithms", "modified parameters optimisation algorithm", "modified parameters estimation algorithm"

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 caging optimisation algorithms") OR ("modified parameters optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified caging optimisation algorithms ) or ( modified parameters optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified caging optimisation algorithms") or ("modified parameters optimization algorithm"))*.