Perhaps you should try some spelling variations:
"modified notion optimization algorithmss" » "modified notion optimization algorithms", "modified notion optimisation algorithm", "modified notion estimation algorithm", "modified network optimization algorithmss", "modified policy optimization algorithmss", "modified allocation optimization algorithmss"
"modified staffing estimation algorithms" » "modified staffing estimation algorithm", "modified staffing optimization algorithms", "modified staffing optimisation algorithm", "modified caging 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 staffing estimation algorithms") OR ("modified notion optimization algorithmss"))~.
• Removing quotes may allow a broader search: (( modified staffing estimation algorithms ) or ( modified notion optimization algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified staffing estimation algorithms") or ("modified notion optimization algorithmss"))*.