Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"machines using one algorithm" » "machinery using one algorithm", "machines using our algorithm", "machines using _ algorithm", "machines using mom algorithm", "machines using open algorithm", "machines using pre algorithm", "machines using online 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: (("machines using one algorithm") OR ("modified multiobjective optimization algorithm"))~.
• Removing quotes may allow a broader search: (( machines using one algorithm ) or ( modified multiobjective optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("machines using one algorithm") or ("modified multiobjective optimization algorithm"))*.