Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified ohca solution algorithm" » "modified ohca evolution algorithm", "modified ohca convolution algorithms", "modified ohca evolutionary algorithm", "modified orca solution algorithm", "modified nacl solution algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified ohca solution algorithm") OR ("modified multiobjective estimation algorithms"))~.
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