A friend of mine had a house warming a while back, and had heaps of food prepared and delivered by the Deli. There's a few listed by that name, but this is the one she used: http://www.newhanoian.com/venue/show/187/The-Deli-Tran-Huy-Lieu

Casa Mia has just opened up, also on Kim Ma, and its run by the caterers at my school. Any time they've had to do a function, its been well run, you could try them too (I've just done a review for them, so they're listed now).

you can also try Alfresco group restaurant for instance : Alfresco, Peperonis... They provide this kind of service too. My company hires them all the time. Good luck!

In the past I have been at functions that were catered by KOTO - they also can supply a staff member or two if you require that extra help.
Also I believe Hoa Sua may provide that sort of service also.

You can also try Aden Services, I know that they provide outside catering service. Their add: 8 Trang Thi, tel: 9 344 937. Good luck!

Once we had party and got food from Hoa Sua, we ordered the most expensive price person, and also order more than 2 people extra than actual number. But..my husband and I could not eat anything, they brought so little, so little..not enough for the party. That made us really ashamed. And even I complained the day after to the staff but they did not say sorry at all, it was unbelieveable!!!

Hey try Jusy Kids..they are on here. They catered a VIP party that my company held and it was great.

Ask for Ms Ha.

http://www.justkids.com.vn/?page=home