Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified make evolution algorithm" » "modified make solution algorithm", "modified make evolutionary algorithm", "modified make convolution algorithms", "modified sales evolution algorithm", "modified time evolution algorithm", "modified male evolution algorithm"

You may be able to get more results by adjusting your search query.

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