FILTER IS NOT WORKING

Hi all,

I'm newbie in this group. I have an issue that need your helps :(

I'm bulding report for customer. In that report, I used 3 filters

1. Customer's System ID filter

2. Customer's Taxation filter

3. Customer's Name filter

For example, now I want to see the informations of Customer A.

- Name: A

- Taxation ID: 123456

- System ID: 1001

When I used 2nd and 3rd filter, the result showed only Customers A that I want (like picture in below)

But when I used 1st filter, the results showed all the Customers, included the Customer A. (The results of Customer A is the same with 1st picture). Here is the result.

Thanks in advanced! :))