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

You may be able to get more results by adjusting your search query.

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