Perhaps you should try some spelling variations:
"modified objective approximation algorithm" » "modified objective approximation algorithms"
"modified parameter optimizer algorithmsss" » "modified parameter optimizer algorithms", "modified parameter optimized algorithms", "modified parameter optimized algorithm", "modified parameter optimization algorithmsss"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified parameter optimizer algorithmsss") OR ("modified objective approximation algorithm"))*.
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