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