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