This is not the product code. N82 product code for Malaysia is 0554982. You can search for it at the back of your phone behind the battery.
If you phone does not support chinese, you'll need to change the product code to those which can such as Malaysia, Singapore or Hong Kong. By changing the product code you'll need to do some homework on the internet because flashing your phone is not recommended for beginners...

Nokia does not provide distionary for N82... The copy and paste only works for other phones. Try installing other third party dictionary.
Btw, I used N82 before. One of the legend in Nokia with good camera and Xenon flash (I admit that i bought it for the flash )... But it will soon be replaced by N8

I've searched for related articles and forums for months regarding the dictionary before and it seems that only N82 with original firmware directly from Nokia will have the dictionary. Even after you updated your phone will clear the dictionary database. So my advice is to try other third party softwares rather than stucking in a question with no answer.

But if you are able to find anything useful regarding this problem, please share with us. Cheers...