Perhaps you should try some spelling variations:
"modified market optimisation algorithm" » "modified market optimization algorithms", "modified market estimation algorithm", "modified market estimation algorithms", "modified market optimization algorithm", "modified male optimisation algorithm"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation 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 objective allocation algorithm") OR ("modified market optimisation algorithm"))~.
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