Perhaps you should try some spelling variations:
"modified objective optimization algorithms" » "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified objective estimation algorithm", "modified multiobjective optimization algorithms", "modified objective optimisation algorithms", "modified objective estimation algorithmss"
"modified location optimization algorithm" » "modified location optimisation algorithm", "modified location estimation algorithm", "modified location estimation algorithms", "modified allocation optimization algorithm", "modified static optimization algorithm", "modified carbon optimization 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 objective optimization algorithms") or ("modified location optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective optimization algorithms") OR ("modified location optimization algorithm")).
• Removing quotes may allow a broader search: (( modified objective optimization algorithms ) or ( modified location optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimization algorithms") or ("modified location optimization algorithm"))*.