Perhaps you should try some spelling variations:
"modified multiobjective optimisation algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithm", "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective estimation algorithms"
"modified staffing optimized algorithms" » "modified staffing optimized algorithm", "modified staffing optimizer algorithms", "modified staffing optimization algorithms", "modified caging optimized algorithms"

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 optimisation algorithm") or ("modified staffing optimized algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified multiobjective optimisation algorithm") OR ("modified staffing optimized algorithms")).
• Removing quotes may allow a broader search: (( modified multiobjective optimisation algorithm ) or ( modified staffing optimized algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimisation algorithm") or ("modified staffing optimized algorithms"))*.