控制台中查看的UTF-8内容与R中导出的结果不同

我正在尝试使用url_decode来解码许多不同语言（泰语/越南语/汉语）的url

编码的URL如下所示：

click_search_search=Hanmyshop&by=pop&order=des
click_search_search=sp1114&by=pop&order=des
click_search_search=hanmyshop&by=pop&order=des
click_search_search=%C4%91%E1%BB%93ng%20h%E1%BB%93&by=pop&order=des
click_search_search=Sp1114&by=pop&order=des
click_search_search=nike&by=pop&order=des
click_search_search=%E4%BA%8C%E6%89%8B&by=pop&order=des
click_search_search=%E6%89%8B%E9%8C%B6&by=pop&order=des
click_search_search=%E5%BE%8C%E8%83%8C%E5%8C%85&by=pop&order=des
click_search_search=%E8%BF%AA%E5%A3%AB%E5%B0%BC&by=pop&order=des
click_search_search=iphone&by=pop&order=des

我在R中使用下面的代码来解码它们

url=as.vector(book1$Testing.URL)

de_url=url_decode(url)

Encoding(de_url)="UTF-8"

结果显示在控制台中

click_search_search=Hanmyshop&by=pop&order=des
click_search_search=sp1114&by=pop&order=des
click_search_search=hanmyshop&by=pop&order=des
click_search_search=đồng hồ&by=pop&order=des
click_search_search=Sp1114&by=pop&order=des
click_search_search=nike&by=pop&order=des
click_search_search=二手&by=pop&order=des
click_search_search=手錶&by=pop&order=des
click_search_search=後背包&by=pop&order=des
click_search_search=迪士尼&by=pop&order=des
click_search_search=iphone&by=pop&order=des

当我想在book1中添加一个名为“Decoded.URL”的单独列时

book1$Decoded.URL=de_url

在我键入查看（book1）后，显示的结果与控制台不同。所有越南语或中文字符均替换为格式

我尝试使用fileEncoding=“utf-8”的

write.table，但没有帮助-汉字显示正确；越南人不是。你知道怎么解决这个问题吗