Your garden variety thief is called 'kawatan.' They steal objects or other persons' belongings when no one is around.
Conmen are called 'mangingilad.' In English, they are swindlers. And the act of swindling can be done in many different ways.
A robber is called "tulisan." Some establishments that they rob are banks, jewelry shops, stores and the like.
Listen to this recording if you want to know how these words are spoken.