OR search not working

Hi, my understanding is that I should be able to search with multiple words, and that using a comma would perform an OR search. However as far as I can see the search term:
invoice, finance
does an AND search and not an OR search:

You can do a OR Search as per the following page extract.

Click the link below for full keyword search options in eM Client.

"Search keywords | eM Client

(Extract from the above page)

The OR argument can be used within a single keyword by inserting a comma between the searched terms . For example, subject:update,report will find any messages with the subject containing either update or report .

Also see the following eM Client Search Blog for info on search keywords , arguments , and Custom search folders.

*eM Client Search: Stop scrolling, start finding | eM Client