Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"machinery using ibm algorithm" » "machines using ibm algorithm", "machinery using mom algorithm", "machinery using adam algorithm", "machinery using _ algorithm", "machinery using rbf algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified multiobjective estimation algorithms") or ("machinery using ibm algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified multiobjective estimation algorithms") OR ("machinery using ibm algorithm")).
• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithms ) or ( machinery using ibm algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective estimation algorithms") or ("machinery using ibm algorithm"))*.