First of all, thanks for taivoi and ffarin11's advices. I really love you guys

))
@ taivoi and ffarin11: to give more details:
they haven't asked me to re-submit or anything about the new Dutch good conduct certificate yet since the courier just arrived to their office last Monday so it's gonna take them some time to review all my additional docs in which I attached a formal letter to explain about that minor typo (well, my DOB, address and my last name are all correct, except my first name and middle names do have problem).
Due to the fact that I used to live in NL for 4 years (from 2004 to 2007) and I applied for that certificate in 2009, that is all about the past - more than 5 years or so, I don't think it will be a big problem for my case. Besides, I've been living in Vietnam since 2007 so the Vietnamese police certificate is the most important, isn't it ?
Eventually, I will wait for the feedback from cic at first and see whether they request for the new one or not.
Yup, cic already received my medical results which shows in my ECAS