Perhaps you should try some spelling variations:
parameters optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
modified missing » modified caging, modified passive
data algorithm » adam algorithm
missing data » using data

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 missing data algorithm ) OR ( modified parameters optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified missing data algorithm ) OR ( modified parameters optimisation algorithm ))*.