hi. i'm a dependant of my mother here in hong kong. and i'm married and have a son. is it possible

Is it possible to bring my family here to stay with me? If its not possible. Is there any way how they can stay here for long period of time?. Because two weeks visa is not enough. If its possible how to apply for that and may i know what are the requirements? And how much do i need to prepare for the fees? How long does it takes? Please inform me. Thank you. This is a big help for me. By the way i'm ace.