还可以按照任务限制搜索范围，例如“规划”、“安装”、“使用”、“故障诊断”和“下载”。

You can also limit the search scope by task, such as Plan, Install, Use, Troubleshoot, and Download.

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企业通常都会作这样设置，主要基于以下两点原因：控制用户的更新源，通过限制搜索范围提高性能。

An enterprise typically disables this preference for two reasons: to control the source of updates for their users or to improve performance by limiting the search scope.

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要细化搜索，可以添加参数以限制结果的范围。

To refine the search, you can add parameters to limit the scope of the results.

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