搜索框

You can use the search box at the top of the Package Manager window to find any packages or feature sets that match the text you enter. The Package Manager updates the list as you enter text, displaying every package or feature setA feature set is a collection of related packages that you can use to achieve specific results in the Unity Editor. You can manage feature sets directly in Unity’s Package Manager. More info
See in Glossary within the current context that matches. For example, if you enter web in the search box, the list displays different results depending on whether you choose the Built-in packages list context or the Unity Registry list context:

You can look for a package or a feature set by its name (ID) or its display name. You can search for either the display name as it appears in the Package Manager window or, for Unity packages and feature sets, the registered package name that begins with com.unity.

Your search text could match the beginning, middle, or end of the name. The Package Manager updates the list dynamically.

Note: You can search for either Unity packages and feature sets or Asset Store packages. The list context you choose defines where the Package Manager searches: