Windchill/PDMLink 10.1 Search Keyword operator (AND, OR) syntax

I know that the AND operator can just be used with caps and spaces (e.g. Electronics AND circuit), however the same syntax for OR is not working.  How do you search something like this:

Electronics AND circuit OR board

I know WC 11 can probably do this much easier, but I am asking for 10.1 because that is what we are on now and will be for a while.