[sql-server] Remove certain characters from a string

I'm trying to remove certain characters.

At the moment I have output like cityname district but I want to remove cityname.

SELECT Ort FROM dbo.tblOrtsteileGeo
WHERE GKZ = '06440004'

Output:

Büdingen Aulendiebach
Büdingen Büches
Büdingen Calbach
Büdingen Diebach
Büdingen Dudenrod
Büdingen Düdelsheim

Desired output:

Aulendiebach
Büches
Calbach
Diebach
Dudenrod
Düdelsheim

One issue with REPLACE will be where city names contain the district name. You can use something like.

SELECT SUBSTRING(O.Ort, LEN(C.CityName) + 2, 8000)
FROM   dbo.tblOrtsteileGeo O
       JOIN dbo.Cities C
         ON C.foo = O.foo
WHERE  O.GKZ = '06440004' 

UPDATE yourtable 
SET field_or_column =REPLACE ('current string','findpattern', 'replacepattern') 
WHERE 1