[pmwiki-users] How can I make cookbook:SearchTerms work correctly in Chinese?

[??/LiGuang]

 I have installed this cookbook:SearchTerms( Highlight serach result).
http://www.pmwiki.org/wiki/Cookbook/SearchTerms

It can work correctly in English, but not in Chinese.

How can I make it work correctly in all language?

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     Li.Guang at China.HuiZhou