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