Perhaps you should try some spelling variations:
optimization algorithmsss » optimisation algorithm, estimation algorithms
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
cost optimization » robust optimization, qoe optimization, smooth optimization
parameter » parameters

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: (( cost optimization algorithmsss ) OR ( parameter optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( cost optimization algorithmsss ) or ( parameter optimization algorithms ))*.