EnCase v7 search hits in compound files?

I used to conduct raw search in EnCase v6, and I'd like to see if EnCase v7 raw search could hit keywords inside compound files or not. You won't believe it~search results is 0 but those keywords do exist inside compound files...Let my show you my test as below:

Scenario:

Two compound files, one is a docx and the other is a xlsx. Two keywords, one is "password",and the other is "密碼".

1. Evidence Processing( expand compound files option is checked) completed.

 

2. word.docx

 

3. excel.xlsx

 

4. Conduct raw search

 

5.Search result = 0

 

As you could see that those keywords do exist in those two compound files, but no any hits...