Use the Find and Replace features in Excel to search for something in your workbook, such as a particular number or text string. You can either locate the search item for reference, or you can replace it with something else. You can include wildcard characters such as question marks, tildes, and asterisks, or numbers in your search terms. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.