
This how to do that.
Find one of your mafia to who already in Bangkok
and let them do jobs in Bangkok:
* Move Stolen Art Through Suvarnabhumi Airport
* Show A Cocky Biker Who's In Charge
Both Jobs give chance for Bangkok passport reward
You will be noticed when you had collect several pasport in your hand

Then You or your friend could sent the passport in exchange for something with your mafia members.
Keep giving - keep fighting - keep going stronger everyday
Found a glitch in Bangkok episode :
You Can Do Bangkok JOBS with Less energy what they actually need, means You can Do a job, then when energy isn’t enough, go to Your Mafia Profile then add a few profile points into ENERGY
then you can do the job Like :
Pay Off A Corrupt Police Officer With Just 8 Energy and withoout Paying 200 Bhat
Deliver It To A Japanese Front Company You can do with Just 10 Energy
Take On Local Motorcycle Thugs- Required 21 Energy
Show A Cocky Biker Who’s In Charge – Required 7 Energy
Move Stolen Art Through Suvarnabhumi Airport- Required 8 energy
Arrange An “Accident” For A Witness – Required 8 Energy
Torch A Building For Insurance- Required 12 Energy
Meet A Gang’s Rep In A Go-Go Bar- need 8 Energy
Hurry this wouldn't last longer, Zynga will fix error soon as they know it.