More examples!

M(manglish)
E(english)

M:Ya lo...
E:Right...

M:No wonder la...
E:No wonder...

M:Ceh,you very good meh?
E:Hmph,you think you're so good?

The 'ceh'(prolong the e ten times longer) and 'meh' comes from Cantonese.'Ya' is a short for 'yeah'.Malaysians write it as 'ya' because it's Malay(Malaysia's official language) and it's shorter.