Search system does not support traditional Chinese characters

Hello:
When I use Traditional Chinese to find the keyword does not work
I tested the timely search and classification search, all without running



Please copy the following test (Traditional Chinese and Simplified Chinese)

Keyword position on the right

1.Blog test=合作經濟
2.Audio test=石进原创作品
3.Discussions test=區塊鏈 (Integrated EasyDiscuss)
4.Albums test=平面設計參考
5.Events test=國際建築材暨產品展
6.Groups test=商務社交俱樂部
7.Pages test=城市家庭
8.Photos test=新加坡水舍酒店
9.People test=關強 or 廖培佑
10.Videos test=你所不知道的資本主義

Please help me ,thank you

James