Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"designed network optimisation algorithm" » "designed network optimization algorithms", "designed network estimation algorithms", "designed network optimization algorithm", "defined network optimisation algorithm"

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

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