I would like to know if whiteflies could carry multi-virus in their blood or gut and spread it once feeding from plants (for example: disseminating TYLCV, CBSV and CMV)
Yes Bemisia can do that. the viruses you mentioned are persistent, semi-persistent and none-persistent viruses and carried in different parts of the body, so they can be transmitted simultaneously. Even if Bemisia acquires several persistent viruses it will transmit them. If they are from the same group like begomoviruses, they will probably attach to the same binding sites or "receptors" thus there might be interference in their transmission.