D:\test\*\ .txt not find .txt files in D:\test (not in its subfolder)

[jack6th]

v2.251.0 on Windows 10

If D:\test contains the files below:
D:\test\1.txt
D:\test\a\1.txt
D:\test\a\aa\1.txt
D:\test\b\1.txt

Now input
'D:\test\*.txt' only find first file.
'D:\test\*\ .txt find all files except first file.

Can I find files in the directory and all its subdirectory without pre adding path to the option 'Search folders' ?

[wiem]

with
'D:\test\txt'
you should find them all