Search terms for Discovery Accelerator

All,

I am after a sanity check please.

For a Discovery Accelerator search I need to Search the following:

Date Range 2006 - 2010 (this I have)

To or from: Custodian1 or Custodian2 or Custodian3 (again this i have)

Subject or content: keyword1 OR keyword2 OR keyword3

and Filter1 OR Filter2 OR Filter3

In so much that if Custodian1 sent an email with Keyword1 only, I dont want to get it I only want to capture it if Custodian1 sent an email with Keyword1 AND Filter1.

So should my Subject or content search look like this:

 keyword1 keyword2 keyword31+Filter1 Filter2 Filter3

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If I just add another Subject or Content Seach term it just adds OR variables I think.

Thanks!