Im sitting in the cruise but I have 3 failures occur - ENG1 BLEED VALVE , Left 9th STAGE BLEED, and RIGHT 9th STAGE BLEED. Ive checked the QRH but cant find any referenec to what to do - there are no warnings as such, only noticeable difference is Im only get a reading for one of the DUCT pressures(Obviously) and aft pax cabin bit chlly now. Any suggestions on the actions to take? and reason failure occurred?