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