This issue creates the misunderstanding in sometime while both of them working together.
The way that Thai staffs use to solve this problem is asking for the document or email e.g. during the meeting any discussion and suggestion that they discuss was ask to write on the white board with the reason of easy understanding.
After the meeting the Thai staffs also from the discussion they minutes or email again to check the 20 document, the feedback and correctness will be given for Thai staffs to Indian staffs again to make the same understanding.