Perhaps you should try some spelling variations:
"industrial and reproduction bioengineering" » "industrial and production bioengineering", "industrial and prediction bioengineering", "industrial and introduction engineering", "industrial and reintroduction bioengineering"
"industrial and production engineering" » "industrial and introduction engineering"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("industrial and reproduction bioengineering") OR ("industrial and production engineering")).
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