Describes the cause and action for error messages.
Error Message(English)：
cannot see tabs at bottom
What To Do When Worksheet Tabs Go Missing | AccountingWEB
https://www.accountingweb.com/technology/excel/what-to-do-when-worksheet-tabs-go-missing
How To Restore/Disappeared Missing Sheet Tabs In Microsoft Excel?
http://www.repairmsexcel.com/blog/recover-missing-sheet-tabs-microsoft-excel
How to Get Those Vanished Tabs at the Bottom of an Excel Workbook ...
https://www.journalofaccountancy.com/issues/2010/feb/techqa1.html
Why can't I see my worksheet tabs at the bottom of my spreadsheet?
https://it.toolbox.com/question/why-cant-i-see-my-worksheet-tabs-at-the-bottom-of-my-spreadsheet-051・・・
Excel - Sheet tab missing (Solved !) - YouTube
https://www.youtube.com/watch?v=IDUSLt6LWc8
https://www.youtube.com/watch?v=IDUSLt6LWc8
How to Recover Missing Sheet Tabs | Microsoft Excel 2016 Tutorial ...
https://www.youtube.com/watch?v=I2NWBjsi1kA
https://www.youtube.com/watch?v=I2NWBjsi1kA
How to display or hide sheet tabs and Sheet Tab Bar in Excel?
https://www.extendoffice.com/documents/excel/672-excel-hide-display-sheet-tabs.html