Perhaps you should try some spelling variations:
"improving global performance series." » "improving global performance studies.", "improving global performance size.", "improving total performance series.", "improving regional performance series.", "improving general performance series.", "improving fiscal performance series.", "improving growth performance series.", "providing global performance series."
"growing global performance series." » "growing global performance studies.", "growing global performance size.", "growing total performance series.", "growing regional performance series.", "growing general performance series.", "going global performance series."

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