Perhaps you should try some spelling variations:
"modified objective optimization algorithm" » "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm", "modified multiobjective optimization algorithm"
"modified over estimation algorithms" » "modified over estimation algorithm", "modified over optimization algorithms", "modified over optimisation algorithm", "modified cover estimations algorithms", "modified pose estimation algorithms", "modified sphere estimation algorithms", "modified near estimation algorithms", "modified orca 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 over estimation algorithms") OR ("modified objective optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified over estimation algorithms ) or ( modified objective optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified over estimation algorithms") or ("modified objective optimization algorithm"))*.