Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
approximation algorithm » approximation algorithms
cover optimization » qoe optimization, game optimization
one approximation » time approximation, _ approximation, rough approximations

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( cover optimization algorithms ) OR ( one approximation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( cover optimization algorithms ) OR ( one approximation algorithm ))*.