Should not speak in terms that are not related to us, because it can cause the body's changes from the original. For example, If you know what it should do to speak should make the owner of the subject is speaking.
Do not talk about that, not about us. This may result in changes to the original text example, if you know what's coming. Do not do to say Should the owners say it is better.
Should say in what does not concern us. Because it can make the body in the change from the original, for example, if you hear anything about มาก็ตาม should not be done talking, should the owner of said it would be better.