Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified network » certified network, defined network, modified near
modified drug » modified df, modified orca

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 network optimization algorithm ) OR ( modified drug solution algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified network optimization algorithm ) OR ( modified drug solution algorithm ))*.