The upper line shows the original text from the subject line, the lower line shows the decimated and decomposed result. I see almost no composition (just อั and ำ) – because accent and character were separated by sorting. Do I need to customise anything in order to keep (or to receive) the composed forms?

(I think I've had the same before with Cyrillic texts.)

--
Greetings

  Pete                           <]
             o        __o         |__    o       HPV, the real
    ___o    /I       -\<,         |o \  -\),-%     high speed!
___/\ /\___./ \___...O/ O____.....`-O-'-()--o_________________