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

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 optimisation algorithms ) OR ( modified objective optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified staffing optimisation algorithms ) OR ( modified objective optimization algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( modified staffing optimisation algorithms ) OR ( modified objective optimization algorithm ))*.