Perhaps you should try some spelling variations:
"modified multiobjective optimisation algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithm", "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective estimation algorithms"
"modified optimal evolution algorithms" » "modified optimal evolution algorithm", "modified optimal convolution algorithms", "modified optimal solution algorithm", "modified optimal solution algorithms", "modified time evolution algorithms", "modified thermal evolution algorithms"

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 optimal evolution algorithms") OR ("modified multiobjective optimisation algorithm"))~.
• Removing quotes may allow a broader search: (( modified optimal evolution algorithms ) or ( modified multiobjective optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified optimal evolution algorithms") or ("modified multiobjective optimisation algorithm"))*.