Perhaps you should try some spelling variations:
"modified graph evolutionary algorithm" » "modified graph evolution algorithm", "modified graph solution algorithm"
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation 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 graph evolutionary algorithm") OR ("modified objective optimisation algorithm"))~.
• Removing quotes may allow a broader search: (( modified graph evolutionary algorithm ) or ( modified objective optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified graph evolutionary algorithm") or ("modified objective optimisation algorithm"))*.