This sounds like the problems I was having years ago with Multiterm, when it just did not want to work for Japanese terms. The search did not work, but I also had display problems.
It wasn't Studio, it was an older version.
If I remember correctly, the problem was that the system locale had to be set to Japanese, in other words, there was a system setting that specified what encoding should be used by any software that lacked full Unicode support.
I don't know what OS you have, I have Windows 7 on this computer, and here is the Help entry for that. In case your locale is not set to Chinese, you can try and see if that helps:
Change the system locale
The system locale determines the default character set (letters, symbols, and numbers) and font used to enter and display information in programs that don't use Unicode. This allows non-Unicode programs to run on your computer using the specified language. You might need to change the default system locale when you install additional display languages on your computer. Selecting a different language for the system locale doesn't affect the language in menus and dialog boxes for Windows or other programs that do use Unicode.
Click to open Region and Language.
Click the Administrative tab, and then, under Language for non-Unicode programs, click Change system locale. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
Select the language, and then click OK.
To restart your computer, click Restart now.
You may want to give it a try. I cannot guarantee that this would work, I gave up years ago on using Multiterm, and haven't checked recently whether this is still a problem.
Also, search the SDL knowledgebase, you may find help there.
[Edited at 2011-12-06 05:36 GMT]