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