WP Search Auto Match 插件可以模仿Google或者百度输入搜索词语以后自动出现的一些提示文字，让访客输入一些字后，就会自动出现可能匹配的关键词，具体效果如下图所示：
测试效果，请见 http://www.arefly.com/ 右上角的搜索框
在后台插件安装界面搜索 WP Search Auto Match 即可在线安装，或者到 WordPress 官方插件库下载
如果你想自己折腾类似功能，可以阅读：WordPress 搜索下拉关键词提示
来源：
https://www.wpdaxue.com/wp-search-auto-match.html
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