Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
parameters estimation » parameter estimation, parameter estimates, parameter optimization
df optimisation » _ optimisation, _ optimization, qoe optimization
modified df » modified _, modified adam, modified bi1

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified parameters estimation algorithmss ) or ( modified df optimisation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified parameters estimation algorithmss ) OR ( modified df optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (( modified parameters estimation algorithmss ) or ( modified df optimisation algorithm ))*.