Cambodia Visa(Spouse visa or any long term visa)

[Panthaka2k]

Hi,

I am panthaka from Sri Lanka. I married a Cambodian girl called sokchea on June 2017 by the Sri Lankan law.
So, My wife want me to stay at cambodia with her because it's not easy for her stay at Sri Lanka.(she is a girl and it's not easy to find a Cambodian there to her and about foods)
Now I am stay at cambodia and I got a business visa for my marrege certificate.after exchange few long email with embassy of Cambodia at Thailand.
But it's not easy and little bit a expensive.cambodian immigration extend my visa just for six months because still I don't have a job. It cost 157$ for six months and 290$ for one year.

Thank you....

If anyone know about spouse or any kind of long time visa for cambodia pls help me with that.