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 can be due to many things from scanning with a different resolution than the sample document, or a bad scan, to name a few. Employ the use of anchors on the sample document. An anchor is an identifiable mark that will appear across all documents that helps the software align a docume
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