Describes the cause and action for error messages.
Error Message(English)：
vlookup does not recognize numbers
Excel VLOOKUP Numbers Problem - Contextures
https://www.contextures.com/excelvlookupnumbers.html
VLOOKUP Number Problem
https://www.contextures.com/excelvlookupnumbers.html#problem
Troubleshoot VLOOKUP ...
https://www.contextures.com/excelvlookupnumbers.html#trouble
Top 3 Reasons Why My VLOOKUP Isn't Working - Random Wok
http://www.randomwok.com/excel/top-3-reasons-why-my-vlookup-isnt-working/
Excel VLOOKUP not working - fixing N/A, NAME, VALUE errors ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/
Troubleshooting VLOOKUP ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/#vlookup-na-error
Fixing #VALUE error in ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/#vlookup-value-erro・・・
VLOOKUP not working ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/#vlookup-not-work
6 Reasons Why Your VLOOKUP is Not Working - Ablebits.com
https://www.ablebits.com/office-addins-blog/2014/04/09/why-excel-vlookup-not-working/