Please note the right syntax:
For articles e.g.:1000-111-JB or 1000-277-11
You can also search for 1000, the result will be all pages which include articles containg 1000.
For pages e.g.:1A-120 or 5B-140
You can also search for 1A, the result will be all pages which include 1A, 11A-150 is also possible as a result.
If you have search a word, please try a similar expression.