Hi,
The Amphor Land Office can tell you who is the legal owner if it is Chanot registerd land. However the deeds may well have been given as security for a loan (or some such rather than stolen) in which case you won't get them back until the loan is repaid.

Hi,
Alarm all window's door's and any other mean's of access with fixed vibration detectors no infa red or motion detector's inside house means you switch on alarm when you are home move about freely as normal and if some one trie's window's or door's alarm activated.

Hi,
In your own situation and in order to reduce your levels of concern, would it not have been an option to purchase the 13 rai or at least some, of the land directly adjacent to yours when you built your home?