Perhaps you should try some spelling variations:
optimization algorithmssss » optimization algorithms, optimisation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
notion optimization » network optimization, policy optimization, allocation optimization
network estimation » network optimization

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: (( notion optimization algorithmssss ) OR ( network estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( notion optimization algorithmssss ) or ( network estimation algorithms ))*.