If interested in this Alitalia / Etihad Airways promotional deal you may generally find the cheapest flights between September and December 2015.
Accomodation - Countries of South East Asia are famous also due to very cheap accomodation (has nothing to do with quality of service) and that you can book your hotel almost anytime due to high competition especially in Thailand and Vietnam. If you still want to book your hotel in advance you may consider hotel booking agents such as Hotelopia. They are now also offering 6% promotional code for additional discount off hotel rooms. More details to be found here.
Booking samples (choose Skyscanner IT or DE offshoot)
IT - Venice - Kuala Lumpur from €146
DE - Venice - Kuala Lumpur from €136
IT - Venice - Bangkok from €189
DE - Venice - Bnagkok from €177
The easiest way to check your connection possibilities is through Skyscanner. This tool gives you quickly a rough idea which low-cost airlines are connecting your home town.
Booking sample of Super cheap return flights from Italy to Bangkok or Kuala Lumpur from €136 here. In this case you would be flying from Venice to Kuala Lumpur on 16th of November. You would then fly from Malaysia in Asia back to Italy on 26th of November 2015.