I worked for a long time on my article in MS Office. Suddenly, a crash occurred on my computer during the operation, after which somehow I didn’t have any backups. Now the impressive part of the article has disappeared, and I don’t want and can’t finish everything again.

http://www.techrepublic.com/blog/10-things/10-plus-ways-to-recover-a-corrupted-word-document/
http://www.doc.repair/
Repair doc file: Although every Word document is different, Word documents that are created by a common version of Word have a common file header. I can't tell you exactly what this header contains, because it varies from one version of Word to the next. What I can tell you is that if you use a file editor to examine multiple known good Word documents, it will quickly become apparent which bits each of the documents has in common.
Once you have determined which part of the file is the header, you can copy the header bits from a known good document and use the editor to paste those bits into your corrupt document, overwriting the existing header in the process.
If the header was the portion of the document that was damaged, this technique will fix the problem.
Although every Word document is different, Word documents that are created by a common version of Word have a common file header. I can't tell you exactly what this header contains, because it varies from one version of Word to the next. What I can tell you is that if you use a file editor to examine multiple known good Word documents, it will quickly become apparent which bits each of the documents has in common.
Once you have determined which part of the file is the header, you can copy the header bits from a known good document and use the editor to paste those bits into your corrupt document, overwriting the existing header in the process.
If the header was the portion of the document that was damaged, this technique will fix the problem.