Hi JinIl,
Our apologies for the delayed response. We have considered adding support to display the searched string at the center of the screen and have logged a feature request #1338 on this. You could track the progress of this feature request at this link below :
Feature Request #1338 - Support to display searched string at the center of the screen.
Please let me know if this meets your requirements.
Thanks for your patience.
Regards,
Manohari.R