Rather that typing a long sentence, enter something like 'document separator'. This will return all the articles with the words 'document' or the word 'separator' in the title or keyword list.
This may be due to a permission issue. When Umango runs in the GUI, it uses the current user's permissions. When Umango runs in the service (in the background), it is allowing the Umango job to be handled by the Umango Windows Service. This Windows service (background) program, by
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