Perhaps you should try some spelling variations:
"defined network optimization algorithm" » "defined network optimization algorithms", "defined network optimisation algorithm", "defined network estimation algorithm", "designed network optimization algorithm"
"modified passive evolutionary algorithm" » "modified passive evolution algorithm", "modified passive solution algorithm", "modified adaptive evolutionary algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("defined network optimization algorithm") OR ("modified passive evolutionary algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"defined network optimization algorithm\") OR (\"modified passive evolutionary algorithm\"))*".
• Removing quotes may allow a broader search: (( defined network optimization algorithm ) OR ( modified passive evolutionary algorithm ))*.