Although I couldn't find it documented, it appears that when adding filter conditions AND has a higher precedence than OR.  This makes sense and is consistent with Boolean algebra and most programming languages.  As a result, the AND only applies to operand C in the following:
A OR B OR C AND D
and it would be necessary to change it to the following to also apply the AND to A and B:
A AND D OR B AND D OR C AND D
Is there a way in TB to parenthesize A OR B OR C (or do something equivalent) so the AND D part doesn't have to be repeated?  For example, something like the following:
(A OR B OR C) AND D

Thanks!