Single linq Statement

Question

I wrote multiple linq statement ... and how it make as single linq statement.. and my code is given below

 

if (Filter != " ")
{
details = (from e in Country_Details where e.Country.ToLower().StartsWith(Filter.ToLower()) select e).ToList();
if (details.Count <= 0)
{
details = (from e in Country_Details where e.Capital.ToLower().StartsWith(Filter.ToLower()) select e).ToList();
if (details.Count <= 0)
{
details = (from e in Country_Details where e.Region.ToLower().StartsWith(Filter.ToLower()) select e).ToList();
if (details.Count <= 0)
{
details = (from e in Country_Details where e.S_region.ToLower().StartsWith(Filter.ToLower()) select e).ToList();
}
}
}
}