U can visit from Bangkok by road. No problem. Try to move in early morning 5-7am so you can reach Cambodia before night. Google for more detailed info.
. I know 1st year non OA to get from my country n documents. But when I bounces border suppose 11th month anywhere savankhet n reenter in 7 days, How I get police clearances from my country. Funds details I can get by net banking but can't get seal of bank. So please advice about it.