1930 census lists Vasa and Mary MILIC, both listed as speaking Serbian born in Serbia. His arrival year is listed as 1910 and hers as 1912. He is listed as being NAturalized and she as an ALien. Vasa's occupation butcher.

As found in WW I Draft Records. Could this be your Vaso?

Name: Vasa Milisavlevich
City: Omaha
Residence 5211 S. 30th St
County: Douglas
State: Nebraska
Birthplace: Verebstita Bulgaria
Birth Date: 15 Apr 1893
Employer Armour Packing

This may be the man listed above arriving in the US

Name: Vasso Milossavgevits
Arrival Date: Apr 1912
Age: 19
Estimated Birth Year: abt 1893
Gender: Male
Race: Serbian
Last Residence Vrbestchtitsa, Turkey
Nearest Relative his brother Jovan
Port of Departure: Bremen, Germany
Ship Name: Brandenburg
Port of Arrival: Baltimore, Maryland
Destination Indianapolis IN to his friend George Stefanovits
Last Residence: Turkey

There are numerous Serbs who migrated to Indiana from that part of Serbia that was occupied by the Turks in those days.

There is a 1920 Omaha census record for Mary
Name Age
Dushen Zimunski 42
Damica Zimunski 42
Steve Zimunski 21
Mary Zimunski 18
Swetislaw Zimunski 6

Link to the tombstone for Danica and Dusan

http://billiongraves.com/pages/record/person/424224

Here is an arrival manifest from 1914 destination Omaha NB the modern day transcribers erred the name is ZEMUNSKI on the manifest


Zenninski, Dusan M 36y M Perlasz,Hungary, Servian last residence So. Omaha, U.S.A.
Zenninski, Danicza F 36y M Hungary, Servian So. Omaha, U.S.A.
Zenninski, Istvan M 15y S Hungary, Servian So. Omaha, U.S.A.
Zenninski, Smilya F 12y S Hungary, Servian So. Omaha, U.S.A.
Zenninski, Szvetislaw M 1y S US Citizen So. Omaha, U.S.A.

Perhaps they came from what is now Perlez, Serbia, Vojvodina region, but until the end of WW I it was part of the old Banat region of Hungary.

https://en.wikipedia.org/wiki/Perlez

Perhaps Yugaya can help with the place where Vasa was born.

Robert