Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
approximation algorithm » approximation algorithms
passive optimization » bayesian optimization, game optimization, policy optimization
bi1 approximation » time approximation, _ approximation, one approximation
modified passive » modified adaptive
modified bi1 » modified _

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: "(( modified passive optimization algorithms ) OR ( modified bi1 approximation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified passive optimization algorithms ) OR ( modified bi1 approximation algorithm ))*.