Perhaps you should try some spelling variations:
"modified staffing optimization algorithms" » "modified staffing optimisation algorithm", "modified staffing estimation algorithms", "modified staffing optimized algorithms", "modified caging optimization algorithms"
"modified arcad estimation algorithm" » "modified risk estimation algorithm", "modified orca estimation algorithm", "modified adam estimation 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 arcad estimation algorithm") OR ("modified staffing optimization algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified arcad estimation algorithm\") OR (\"modified staffing optimization algorithms\"))".
• Removing quotes may allow a broader search: (( modified arcad estimation algorithm ) OR ( modified staffing optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified arcad estimation algorithm") OR ("modified staffing optimization algorithms"))*.