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

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 caging estimation algorithms") or ("modified parameter optimisation algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging estimation algorithms") OR ("modified parameter optimisation algorithmss")).
• Removing quotes may allow a broader search: (( modified caging estimation algorithms ) or ( modified parameter optimisation algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("modified caging estimation algorithms") or ("modified parameter optimisation algorithmss"))*.