Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
optimization algorithm » optimisation algorithm, estimation algorithm, estimation algorithms
notion optimization » policy optimization, allocation optimization
modified network » certified network, defined network, modified near

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