Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
optimizer algorithms » optimized algorithms, optimized algorithm
modified network » certified network, defined network, modified near
modified aging » modified caging

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