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