Tokyo Drift Scenes

[dvani]

What did Han say? and what did it mean?

there is a scene after Sean and Han walk through the arcade into DK's office.
Sean is then asked to leave DK's office, so Han and DK can talk.
Han then sits at the table with DK to talk. toward the end of this
conversation DK asked Han when is the shipment arriving and Han then tells
DK to sit pretty and let me handle it. Han then picks up a game tile from the
table and slaps it down, Han then says something in Japanese it sounds something like:

("dosh auka")

("tosh kauka")

("nosh nauka")

or ("kosh aruka")

please do not use my spelling of these words as an actual reference.
keep in mind that i am spelling the words the way i think i heard them
pronounced by Han.

So can somebody tell me what Han said here and how do you spell or pronounce it.