What is the undisclosed when Aldertown is Aldershot Town and Wycombe Wanderers is Oxford United?
create table table_23835213_2 (undisclosed varchar, wycombe_wanderers varchar, PRIMARY KEY (undisclosed))
select undisclosed from table_23835213_2 where "aldershot_town" = "aldershot_town" and wycombe_wanderers = "oxford united"