Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified global variation algorithmss" » "modified global estimation algorithms", "modified global vision algorithms", "modified total variation algorithmss", "modified global edition algorithmss"

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 global variation algorithmss") or ("modified multiobjective optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified global variation algorithmss") OR ("modified multiobjective optimization algorithm")).
• Removing quotes may allow a broader search: (( modified global variation algorithmss ) or ( modified multiobjective optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified global variation algorithmss") or ("modified multiobjective optimization algorithm"))*.