Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithmssss" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm"
"modified _ estimation algorithms" » "modified _ estimation algorithm", "modified _ optimization algorithms", "modified _ 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 _ estimation algorithms\") OR (\"modified multiobjective optimization algorithmssss\"))~".
• Removing quotes may allow a broader search: (( modified _ estimation algorithms ) OR ( modified multiobjective optimization algorithmssss ))~.
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