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