Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective approximation algorithms"
"modified total optimisation algorithm" » "modified total optimization algorithms", "modified total estimation algorithm", "modified global optimization algorithm", "modified thermal optimisation algorithm", "modified ti6al4v optimisation algorithm"

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 multiobjective estimation algorithms\") OR (\"modified total optimisation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithms ) OR ( modified total optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective estimation algorithms") OR ("modified total optimisation algorithm"))*.