change character ก to Ď during xls2csv -d utf-8 /source.xls >desination.csv

Question

When I convert an XLS file to CSV using xls2csv there is a problem that the character 'ก' is converted to 'Ď'.

My command is:

xls2csv -d utf-8 /test.xls>/test.csv

Other characters of Thai and other languages work normally.