Perhaps you should try some spelling variations:
optimisation algorithms » optimization algorithms, estimation algorithms, estimation algorithm
parameter optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
dung optimisation » _ optimisation

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: (( dung optimisation algorithms ) OR ( parameter optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( dung optimisation algorithms ) or ( parameter optimisation algorithm ))*.