Can one change his tourist visa entry to business visa with out sending him back to his Country by paying off his over stay and having a licenced business and maybe having a CAMBODIA woman as his wife properly married.

Please I need a sincere answer.

Sincerely yes.
Don't hafta go back to your home country, just hafta go somewhere.

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1.Pay off the overstay charge. How many days? If you don't do this, you'll need a new passport, and even that might not work anymore.
2.Get a visa for Vietnam (agent or embassy. ~$65), or make sure you can get a 2 wk free one at the land border (depends on your nationality, and if the viets still offer).
3.Take a bus to HCMC. $12 each way with Mekong Express (their busses have toilets. The vans don't.)
4. Spend 1 night in a cheap hotel in Pham Ngu Lao, near the bus stop/office. $7-$25. I usually spend no more than $15.
5. Come back to PP the next morning.
6. When you are at the Bavet border crossing, make sure you get the more expensive ORDINARY Cambodian visa. Check it before you leave the counter.
7. After you're back in PP, find out what EOS you are eligible for, and start the process. Don't delay!

This is the cheapest way that I know how to do what you want. You don't have to go back to your country, you just have to leave Cambodia, then come back. I am also assuming that your overstay won't get you "blacklisted." I think paying the $10/day keeps you in good graces, but everything changes always.

Thanks for your reply, but do I have to meet the immigration Of CAMBODIA to pay off the overstay? How can I get this contact to who will be able to help with 100% assurance without failure?