Microsoft tell us that
Microsoft Outlook supports Unicode and provides full support for multilingual data.
but today, when I search for my message with this subject "FW: １月分課題対応のお願い" (Sure that I have it in my mail box) My Outlook 2010 tell me that
No match found for "FW: １月分課題対応のお願い"
Please give me some suggest about how to make Outlook to search mails with Japanese subject properly?